Refactor styles to use logical properties for positioning (#23944)

15 files changed, 279 insertions, 571 deletions

diff --git a/app/javascript/styles/mastodon/about.scss b/app/javascript/styles/mastodon/about.scss
index 0183c43d5..0f02563b4 100644
--- a/app/javascript/styles/mastodon/about.scss
+++ b/app/javascript/styles/mastodon/about.scss
@@ -28,14 +28,14 @@ $fluid-breakpoint: $maximum-width + 20px;
     position: relative;
     border-bottom: 1px solid lighten($ui-base-color, 8%);
     padding: 1em 1.75em;
-    padding-left: 3em;
+    padding-inline-start: 3em;
     font-weight: 500;
     counter-increment: list-counter;
 
     &::before {
       content: counter(list-counter);
       position: absolute;
-      left: 0;
+      inset-inline-start: 0;
       top: 50%;
       transform: translateY(-50%);
       background: $highlight-text-color;
diff --git a/app/javascript/styles/mastodon/accounts.scss b/app/javascript/styles/mastodon/accounts.scss
index c007eb4b5..af0d8b5ed 100644
--- a/app/javascript/styles/mastodon/accounts.scss
+++ b/app/javascript/styles/mastodon/accounts.scss
@@ -73,8 +73,8 @@
     }
 
     .display-name {
-      margin-left: 15px;
-      text-align: left;
+      margin-inline-start: 15px;
+      text-align: start;
 
       i[data-hidden] {
         display: none;
@@ -138,22 +138,22 @@
   }
 
   .older {
-    float: left;
-    padding-left: 0;
+    float: inline-start;
+    padding-inline-start: 0;
 
     .fa {
       display: inline-block;
-      margin-right: 5px;
+      margin-inline-end: 5px;
     }
   }
 
   .newer {
-    float: right;
-    padding-right: 0;
+    float: inline-end;
+    padding-inline-end: 0;
 
     .fa {
       display: inline-block;
-      margin-left: 5px;
+      margin-inline-start: 5px;
     }
   }
 
diff --git a/app/javascript/styles/mastodon/admin.scss b/app/javascript/styles/mastodon/admin.scss
index d54d6634d..accddc004 100644
--- a/app/javascript/styles/mastodon/admin.scss
+++ b/app/javascript/styles/mastodon/admin.scss
@@ -117,7 +117,7 @@ $content-width: 840px;
         text-overflow: ellipsis;
 
         i.fa {
-          margin-right: 5px;
+          margin-inline-end: 5px;
         }
 
         &:hover {
@@ -186,7 +186,10 @@ $content-width: 840px;
   }
 
   .content {
-    padding: 55px 15px 20px 25px;
+    padding-top: 55px;
+    padding-bottom: 20px;
+    padding-inline-start: 25px;
+    padding-inline-end: 15px;
 
     @media screen and (max-width: $no-columns-breakpoint) {
       max-width: none;
@@ -202,11 +205,12 @@ $content-width: 840px;
         flex-wrap: wrap;
         align-items: center;
         justify-content: space-between;
-        margin: -15px -15px 0 0;
+        margin-top: -15px;
+        margin-inline-end: -15px;
 
         & > * {
           margin-top: 15px;
-          margin-right: 15px;
+          margin-inline-end: 15px;
         }
       }
 
@@ -385,7 +389,7 @@ $content-width: 840px;
           z-index: 10;
           width: 100%;
           height: calc(100% - 56px);
-          left: 0;
+          inset-inline-start: 0;
           bottom: 0;
           overflow-y: auto;
           background: $ui-base-color;
@@ -470,10 +474,11 @@ body,
 .filters {
   display: flex;
   flex-wrap: wrap;
+  gap: 40px;
 
   .filter-subset {
     flex: 0 0 auto;
-    margin: 0 40px 20px 0;
+    margin-bottom: 20px;
 
     &:last-child {
       margin-bottom: 30px;
@@ -485,7 +490,7 @@ body,
 
       li {
         display: inline-block;
-        margin-right: 5px;
+        margin-inline-end: 5px;
       }
     }
 
@@ -572,7 +577,7 @@ body,
 
   .activity-stream {
     flex: 2 0 0;
-    margin-right: 20px;
+    margin-inline-end: 20px;
     max-width: calc(100% - 60px);
 
     .entry {
@@ -625,12 +630,12 @@ body,
   }
 
   .media-spoiler-toggle-buttons {
-    margin-left: auto;
+    margin-inline-start: auto;
 
     .button {
       overflow: visible;
       margin: 0 0 5px 5px;
-      float: right;
+      float: inline-end;
     }
   }
 }
@@ -651,7 +656,7 @@ body,
 
 .special-action-button,
 .back-link {
-  text-align: right;
+  text-align: end;
   flex: 1 1 auto;
 }
 
@@ -669,7 +674,7 @@ body,
   display: block;
   line-height: 20px;
   padding: 15px;
-  padding-left: 15px * 2 + 40px;
+  padding-inline-start: 15px * 2 + 40px;
   background: $ui-base-color;
   border-bottom: 1px solid darken($ui-base-color, 8%);
   position: relative;
@@ -696,7 +701,7 @@ body,
 
   &__avatar {
     position: absolute;
-    left: 15px;
+    inset-inline-start: 15px;
     top: 15px;
 
     .avatar {
@@ -764,7 +769,7 @@ a.name-tag,
   .avatar {
     display: block;
     margin: 0;
-    margin-right: 5px;
+    margin-inline-end: 5px;
     border-radius: 50%;
   }
 
@@ -778,7 +783,7 @@ a.name-tag,
 
 .speech-bubble {
   margin-bottom: 20px;
-  border-left: 4px solid $ui-highlight-color;
+  border-inset-inline-start: 4px solid $ui-highlight-color;
 
   &.positive {
     border-left-color: $success-green;
@@ -794,7 +799,7 @@ a.name-tag,
 
   &__bubble {
     padding: 16px;
-    padding-left: 14px;
+    padding-inline-start: 14px;
     font-size: 15px;
     line-height: 20px;
     border-radius: 4px 4px 4px 0;
@@ -808,7 +813,7 @@ a.name-tag,
 
   &__owner {
     padding: 8px;
-    padding-left: 12px;
+    padding-inline-start: 12px;
   }
 
   time {
@@ -832,7 +837,7 @@ a.name-tag,
       border: 0;
 
       &__avatar-wrapper {
-        margin-left: 0;
+        margin-inline-start: 0;
       }
     }
 
@@ -841,7 +846,7 @@ a.name-tag,
       font-weight: 500;
       color: $darker-text-color;
       text-transform: uppercase;
-      text-align: right;
+      text-align: end;
 
       a {
         color: inherit;
@@ -892,7 +897,7 @@ a.name-tag,
 
         &__icon {
           color: $dark-text-color;
-          margin-right: 4px;
+          margin-inline-end: 4px;
           font-weight: 500;
         }
       }
@@ -1090,7 +1095,7 @@ a.name-tag,
 
   > h4 {
     position: sticky;
-    left: 0;
+    inset-inline-start: 0;
   }
 
   &__table {
@@ -1102,7 +1107,7 @@ a.name-tag,
     &__date {
       white-space: nowrap;
       padding: 10px 0;
-      text-align: left;
+      text-align: start;
       min-width: 120px;
 
       &.retention__table__average {
@@ -1160,7 +1165,7 @@ a.name-tag,
 
     &__total {
       display: block;
-      margin-right: 10px;
+      margin-inline-end: 10px;
       font-weight: 500;
       font-size: 28px;
       color: $primary-text-color;
@@ -1262,7 +1267,7 @@ a.sparkline {
     }
 
     &__value {
-      text-align: right;
+      text-align: end;
       color: $darker-text-color;
       padding: 11px 10px;
     }
@@ -1273,7 +1278,7 @@ a.sparkline {
       height: 8px;
       border-radius: 50%;
       background: $ui-highlight-color;
-      margin-right: 10px;
+      margin-inline-end: 10px;
 
       @for $i from 0 through 10 {
         &--#{10 * $i} {
@@ -1309,7 +1314,7 @@ a.sparkline {
     }
 
     &__rules {
-      margin-left: 30px;
+      margin-inline-start: 30px;
     }
   }
 
@@ -1431,7 +1436,7 @@ a.sparkline {
       height: 21px;
       position: absolute;
       bottom: 0;
-      right: 15px;
+      inset-inline-end: 15px;
       background: linear-gradient(to left, $ui-base-color, transparent);
       pointer-events: none;
     }
@@ -1511,7 +1516,7 @@ a.sparkline {
     background: $ui-base-color;
     position: relative;
     padding: 15px;
-    padding-left: 15px * 2 + 40px;
+    padding-inline-start: 15px * 2 + 40px;
     border-bottom: 1px solid darken($ui-base-color, 8%);
 
     &:first-child {
@@ -1531,7 +1536,7 @@ a.sparkline {
 
     &__avatar {
       position: absolute;
-      left: 15px;
+      inset-inline-start: 15px;
       top: 15px;
       border-radius: 4px;
       width: 40px;
@@ -1547,7 +1552,7 @@ a.sparkline {
       .username {
         color: $primary-text-color;
         font-weight: 500;
-        margin-right: 5px;
+        margin-inline-end: 5px;
 
         a {
           color: inherit;
@@ -1562,7 +1567,7 @@ a.sparkline {
       }
 
       time {
-        margin-left: 5px;
+        margin-inline-start: 5px;
         vertical-align: baseline;
       }
     }
@@ -1597,8 +1602,8 @@ a.sparkline {
     &__actions {
       position: absolute;
       top: 15px;
-      right: 15px;
-      text-align: right;
+      inset-inline-end: 15px;
+      text-align: end;
     }
   }
 }
@@ -1621,7 +1626,7 @@ a.sparkline {
       flex: 0 0 auto;
       width: 200px;
       padding: 15px;
-      padding-right: 0;
+      padding-inline-end: 0;
 
       .button {
         display: block;
@@ -1657,7 +1662,7 @@ a.sparkline {
 }
 
 .section-skip-link {
-  float: right;
+  float: inline-end;
 
   a {
     color: $ui-highlight-color;
@@ -1707,7 +1712,7 @@ a.sparkline {
 
   &__rules {
     list-style: disc;
-    padding-left: 15px;
+    padding-inline-start: 15px;
     margin-bottom: 20px;
     color: $darker-text-color;
 
@@ -1796,7 +1801,7 @@ a.sparkline {
 
   li {
     counter-increment: step 1;
-    padding-left: 2.5rem;
+    padding-inline-start: 2.5rem;
     padding-bottom: 8px;
     position: relative;
     margin-bottom: 8px;
@@ -1806,7 +1811,7 @@ a.sparkline {
       content: counter(step);
       font-size: 0.625rem;
       font-weight: 500;
-      left: 0;
+      inset-inline-start: 0;
       display: flex;
       justify-content: center;
       align-items: center;
@@ -1825,7 +1830,7 @@ a.sparkline {
       background: $highlight-text-color;
       bottom: 0;
       top: calc(1.875rem + 1px);
-      left: 0.6875rem;
+      inset-inline-start: 0.6875rem;
     }
 
     &:last-child {
diff --git a/app/javascript/styles/mastodon/basics.scss b/app/javascript/styles/mastodon/basics.scss
index 1d08b12e5..a344c7fa4 100644
--- a/app/javascript/styles/mastodon/basics.scss
+++ b/app/javascript/styles/mastodon/basics.scss
@@ -267,7 +267,7 @@ button {
   overflow: hidden;
   position: absolute;
   top: 0;
-  left: 0;
+  inset-inline-start: 0;
   z-index: -1000;
 }
 
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index 0893ea7d9..b9303f2ef 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -309,7 +309,7 @@
   &__counter {
     display: inline-block;
     width: auto;
-    margin-left: 4px;
+    margin-inline-start: 4px;
     font-size: 12px;
     font-weight: 500;
   }
@@ -413,7 +413,7 @@ body > [data-popper-placement] {
       width: 18px;
       height: 18px;
       flex: 0 0 auto;
-      margin-right: 10px;
+      margin-inline-end: 10px;
       top: -1px;
       border-radius: 4px;
       vertical-align: middle;
@@ -465,7 +465,7 @@ body > [data-popper-placement] {
   .emoji-picker-dropdown {
     position: absolute;
     top: 0;
-    right: 0;
+    inset-inline-end: 0;
   }
 
   .compose-form__autosuggest-wrapper {
@@ -527,7 +527,7 @@ body > [data-popper-placement] {
     min-height: 100px;
     border-radius: 4px 4px 0 0;
     padding-bottom: 0;
-    padding-right: 10px + 22px;
+    padding-right: 10px + 22px; // Cannot use inline-end because of dir=auto
     resize: none;
     scrollbar-color: initial;
 
@@ -536,7 +536,7 @@ body > [data-popper-placement] {
     }
 
     @media screen and (max-width: 600px) {
-      height: 100px !important; // prevent auto-resize textarea
+      height: 100px !important; // Prevent auto-resize textarea
       resize: vertical;
     }
   }
@@ -605,7 +605,7 @@ body > [data-popper-placement] {
 
     &__uses {
       flex: 0 0 auto;
-      text-align: right;
+      text-align: end;
       overflow: hidden;
       text-overflow: ellipsis;
       white-space: nowrap;
@@ -615,7 +615,7 @@ body > [data-popper-placement] {
   .autosuggest-account-icon,
   .autosuggest-emoji img {
     display: block;
-    margin-right: 8px;
+    margin-inline-end: 8px;
     width: 16px;
     height: 16px;
   }
@@ -677,8 +677,8 @@ body > [data-popper-placement] {
         position: absolute;
         z-index: 2;
         bottom: 0;
-        left: 0;
-        right: 0;
+        inset-inline-start: 0;
+        inset-inline-end: 0;
         box-sizing: border-box;
         background: linear-gradient(
           0deg,
@@ -737,7 +737,7 @@ body > [data-popper-placement] {
 
     .character-counter__wrapper {
       align-self: center;
-      margin-right: 4px;
+      margin-inline-end: 4px;
     }
   }
 
@@ -826,7 +826,7 @@ body > [data-popper-placement] {
 }
 
 .reply-indicator__cancel {
-  float: right;
+  float: inline-end;
   line-height: 24px;
 }
 
@@ -836,13 +836,13 @@ body > [data-popper-placement] {
   max-width: 100%;
   line-height: 24px;
   overflow: hidden;
-  padding-right: 25px;
+  padding-inline-end: 25px;
   text-decoration: none;
 }
 
 .reply-indicator__display-avatar {
-  float: left;
-  margin-right: 5px;
+  float: inline-start;
+  margin-inline-end: 5px;
 }
 
 .status__content--with-action {
@@ -1159,7 +1159,7 @@ body > [data-popper-placement] {
 
 .notification__relative_time {
   color: $dark-text-color;
-  float: right;
+  float: inline-end;
   font-size: 14px;
   padding-bottom: 1px;
 }
@@ -1344,7 +1344,7 @@ body > [data-popper-placement] {
   font-weight: 500;
   font-size: 12px;
   line-height: 17px;
-  margin-left: 6px;
+  margin-inline-start: 6px;
 }
 
 .reply-indicator__content {
@@ -1389,7 +1389,7 @@ body > [data-popper-placement] {
     border-bottom: 0;
 
     .account__avatar-wrapper {
-      margin-left: 0;
+      margin-inline-start: 0;
     }
   }
 
@@ -1452,7 +1452,7 @@ body > [data-popper-placement] {
   &-inline {
     display: inline-block;
     vertical-align: middle;
-    margin-right: 5px;
+    margin-inline-end: 5px;
   }
 
   &-composite {
@@ -1461,7 +1461,7 @@ body > [data-popper-placement] {
     position: relative;
 
     & > div {
-      float: left;
+      float: inline-start;
       position: relative;
       box-sizing: border-box;
     }
@@ -1475,7 +1475,7 @@ body > [data-popper-placement] {
       display: block;
       position: absolute;
       top: 50%;
-      left: 50%;
+      inset-inline-start: 50%;
       transform: translate(-50%, -50%);
       color: $primary-text-color;
       text-shadow: 1px 1px 2px $base-shadow-color;
@@ -1495,7 +1495,7 @@ a .account__avatar {
   &-overlay {
     position: absolute;
     bottom: 0;
-    right: 0;
+    inset-inline-end: 0;
     z-index: 1;
   }
 }
@@ -1552,15 +1552,15 @@ a .account__avatar {
 
   .dropdown--active {
     .dropdown__content.dropdown__right {
-      left: 6px;
-      right: initial;
+      inset-inline-start: 6px;
+      inset-inline-end: initial;
     }
 
     &::after {
       bottom: initial;
-      margin-left: 11px;
+      margin-inline-start: 11px;
       margin-top: -7px;
-      right: initial;
+      inset-inline-end: initial;
     }
   }
 }
@@ -1576,7 +1576,7 @@ a .account__avatar {
   text-decoration: none;
   overflow: hidden;
   flex: 0 1 100%;
-  border-right: 1px solid lighten($ui-base-color, 8%);
+  border-inset-inline-end: 1px solid lighten($ui-base-color, 8%);
   padding: 10px 0;
   border-bottom: 4px solid transparent;
 
@@ -1616,8 +1616,8 @@ a .account__avatar {
 }
 
 .account-authorize__avatar {
-  float: left;
-  margin-right: 10px;
+  float: inline-start;
+  margin-inline-end: 10px;
 }
 
 .status__display-name,
@@ -2089,7 +2089,7 @@ a.account__display-name {
   }
 
   &.right {
-    left: -9px;
+    inset-inline-start: -9px;
 
     &::before {
       transform: rotate(-90deg);
@@ -2101,7 +2101,7 @@ a.account__display-name {
   }
 
   &.left {
-    right: -9px;
+    inset-inline-end: -9px;
 
     &::before {
       transform: rotate(90deg);
@@ -2171,7 +2171,7 @@ a.account__display-name {
   vertical-align: top;
 
   .account__avatar {
-    margin-right: 5px;
+    margin-inline-end: 5px;
     border-radius: 50%;
   }
 
@@ -2184,8 +2184,8 @@ a.account__display-name {
   display: block;
   line-height: 18px;
   max-width: 311px;
-  right: 0;
-  text-align: left;
+  inset-inline-end: 0;
+  text-align: start;
   z-index: 9999;
 
   & > ul {
@@ -2199,12 +2199,12 @@ a.account__display-name {
   }
 
   &.dropdown__right {
-    right: 0;
+    inset-inline-end: 0;
   }
 
   &.dropdown__left {
     & > ul {
-      left: -98px;
+      inset-inline-start: -98px;
     }
   }
 
@@ -2423,23 +2423,23 @@ $ui-header-height: 55px;
   .drawer {
     flex: 0 0 auto;
     padding: 10px;
-    padding-left: 5px;
-    padding-right: 5px;
+    padding-inline-start: 5px;
+    padding-inline-end: 5px;
 
     &:first-child {
-      padding-left: 10px;
+      padding-inline-start: 10px;
     }
 
     &:last-child {
-      padding-right: 10px;
+      padding-inline-end: 10px;
     }
   }
 
   .columns-area > div {
     .column,
     .drawer {
-      padding-left: 5px;
-      padding-right: 5px;
+      padding-inline-start: 5px;
+      padding-inline-end: 5px;
     }
   }
 }
@@ -2486,7 +2486,7 @@ $ui-header-height: 55px;
   }
 
   span {
-    margin-left: 5px;
+    margin-inline-start: 5px;
     display: none;
   }
 }
@@ -2528,7 +2528,7 @@ $ui-header-height: 55px;
     line-height: 18px;
     font-size: 16px;
     padding: 15px;
-    padding-right: 30px;
+    padding-inline-end: 30px;
   }
 
   .search__icon .fa {
@@ -2596,7 +2596,7 @@ $ui-header-height: 55px;
     .navigation-panel {
       margin: 0;
       background: $ui-base-color;
-      border-left: 1px solid lighten($ui-base-color, 8%);
+      border-inset-inline-start: 1px solid lighten($ui-base-color, 8%);
       height: 100vh;
     }
 
@@ -2668,7 +2668,7 @@ $ui-header-height: 55px;
 
   &__badge {
     position: absolute;
-    left: 9px;
+    inset-inline-start: 9px;
     top: -13px;
     background: $ui-highlight-color;
     border: 2px solid lighten($ui-base-color, 8%);
@@ -2682,7 +2682,7 @@ $ui-header-height: 55px;
 
   &__issue-badge {
     position: absolute;
-    left: 11px;
+    inset-inline-start: 11px;
     bottom: 1px;
     display: block;
     background: $error-red;
@@ -2738,7 +2738,7 @@ $ui-header-height: 55px;
 
   &__background {
     position: absolute;
-    left: 0;
+    inset-inline-start: 0;
     bottom: 0;
     height: 220px;
     width: auto;
@@ -2864,7 +2864,7 @@ $ui-header-height: 55px;
 .drawer__inner {
   position: absolute;
   top: 0;
-  left: 0;
+  inset-inline-start: 0;
   background: lighten($ui-base-color, 13%);
   box-sizing: border-box;
   padding: 0;
@@ -2907,7 +2907,7 @@ $ui-header-height: 55px;
 .pseudo-drawer {
   background: lighten($ui-base-color, 13%);
   font-size: 13px;
-  text-align: left;
+  text-align: start;
 }
 
 .drawer__header {
@@ -3010,7 +3010,7 @@ $ui-header-height: 55px;
 
 .column-back-button__icon {
   display: inline-block;
-  margin-right: 5px;
+  margin-inline-end: 5px;
 }
 
 .column-back-button--slim {
@@ -3023,7 +3023,7 @@ $ui-header-height: 55px;
   font-size: 16px;
   padding: 15px;
   position: absolute;
-  right: 0;
+  inset-inline-end: 0;
   top: -48px;
 }
 
@@ -3088,7 +3088,7 @@ $ui-header-height: 55px;
   margin-top: auto;
   margin-bottom: auto;
   line-height: 0;
-  left: 8px;
+  inset-inline-start: 8px;
   opacity: 0;
   transition: opacity 0.25s ease;
 }
@@ -3107,7 +3107,7 @@ $ui-header-height: 55px;
   margin-top: auto;
   margin-bottom: auto;
   line-height: 0;
-  right: 10px;
+  inset-inline-end: 10px;
   opacity: 1;
   transition: opacity 0.25s ease;
 }
@@ -3119,7 +3119,7 @@ $ui-header-height: 55px;
 .react-toggle-thumb {
   position: absolute;
   top: 1px;
-  left: 1px;
+  inset-inline-start: 1px;
   width: 22px;
   height: 22px;
   border: 1px solid $ui-base-color;
@@ -3131,7 +3131,7 @@ $ui-header-height: 55px;
 }
 
 .react-toggle--checked .react-toggle-thumb {
-  left: 27px;
+  inset-inline-start: 27px;
   border-color: $ui-highlight-color;
 }
 
@@ -3185,7 +3185,7 @@ $ui-header-height: 55px;
 
 .column-link__icon {
   display: inline-block;
-  margin-right: 5px;
+  margin-inline-end: 5px;
 }
 
 .column-link__badge {
@@ -3279,7 +3279,7 @@ $ui-header-height: 55px;
 
   thead {
     position: absolute;
-    left: -9999px;
+    inset-inline-start: -9999px;
   }
 
   td {
@@ -3383,9 +3383,9 @@ button.icon-button.active i.fa-retweet {
 
   &__actions {
     bottom: 0;
-    left: 0;
+    inset-inline-start: 0;
     position: absolute;
-    right: 0;
+    inset-inline-end: 0;
     top: 0;
     display: flex;
     justify-content: center;
@@ -3491,7 +3491,7 @@ a.status-card {
     position: absolute;
     transform-origin: 50% 50%;
     top: 50%;
-    left: 50%;
+    inset-inline-start: 50%;
     transform: translate(-50%, -50%);
   }
 }
@@ -3558,7 +3558,7 @@ a.status-card.compact:hover {
   object-fit: fill;
   position: absolute;
   top: 0;
-  left: 0;
+  inset-inline-start: 0;
   z-index: 0;
   background: $base-overlay-background;
 
@@ -3673,8 +3673,8 @@ a.status-card.compact:hover {
       content: '';
       position: absolute;
       bottom: -13px;
-      left: 0;
-      right: 0;
+      inset-inline-start: 0;
+      inset-inline-end: 0;
       margin: 0 auto;
       width: 60%;
       pointer-events: none;
@@ -3709,11 +3709,12 @@ a.status-card.compact:hover {
   & > button {
     margin: 0;
     border: 0;
-    padding: 15px 0 15px 15px;
+    padding: 15px;
+    padding-inline-end: 0;
     color: inherit;
     background: transparent;
     font: inherit;
-    text-align: left;
+    text-align: start;
     text-overflow: ellipsis;
     overflow: hidden;
     white-space: nowrap;
@@ -3747,7 +3748,7 @@ a.status-card.compact:hover {
 }
 
 .column-header__links .text-btn {
-  margin-right: 10px;
+  margin-inline-end: 10px;
 }
 
 .column-header__button {
@@ -3830,18 +3831,18 @@ a.status-card.compact:hover {
 }
 
 .column-header__setting-arrows {
-  float: right;
+  float: inline-end;
 
   .column-header__setting-btn {
     padding: 5px;
 
     &:first-child {
-      padding-right: 7px;
+      padding-inline-end: 7px;
     }
 
     &:last-child {
-      padding-left: 7px;
-      margin-left: 5px;
+      padding-inline-start: 7px;
+      margin-inline-start: 5px;
     }
   }
 }
@@ -3868,7 +3869,7 @@ a.status-card.compact:hover {
 
 .column-header__icon {
   display: inline-block;
-  margin-right: 5px;
+  margin-inline-end: 5px;
 }
 
 .loading-indicator {
@@ -3879,7 +3880,7 @@ a.status-card.compact:hover {
   overflow: visible;
   position: absolute;
   top: 50%;
-  left: 50%;
+  inset-inline-start: 50%;
   transform: translate(-50%, -50%);
   display: flex;
   align-items: center;
@@ -4015,7 +4016,7 @@ a.status-card.compact:hover {
 
 .spoiler-button {
   top: 0;
-  left: 0;
+  inset-inline-start: 0;
   width: 100%;
   height: 100%;
   position: absolute;
@@ -4023,7 +4024,7 @@ a.status-card.compact:hover {
 
   &--minified {
     display: block;
-    left: 4px;
+    inset-inline-start: 4px;
     top: 4px;
     width: auto;
     height: auto;
@@ -4140,12 +4141,12 @@ a.status-card.compact:hover {
 
     &__placeholder {
       color: $dark-text-color;
-      padding-left: 2px;
+      padding-inline-start: 2px;
       font-size: 12px;
     }
 
     &__value-container {
-      padding-left: 6px;
+      padding-inline-start: 6px;
     }
 
     &__multi-value {
@@ -4242,7 +4243,7 @@ a.status-card.compact:hover {
   color: $darker-text-color;
   display: inline-block;
   margin-bottom: 14px;
-  margin-left: 8px;
+  margin-inline-start: 8px;
   vertical-align: middle;
 }
 
@@ -4427,7 +4428,7 @@ a.status-card.compact:hover {
 .emoji-picker-dropdown__modifiers {
   position: absolute;
   top: 60px;
-  right: 11px;
+  inset-inline-end: 11px;
   cursor: pointer;
 }
 
@@ -4435,7 +4436,7 @@ a.status-card.compact:hover {
   position: absolute;
   z-index: 4;
   top: -4px;
-  left: -8px;
+  inset-inline-start: -8px;
   background: $simple-background-color;
   border-radius: 4px;
   box-shadow: 1px 2px 6px rgba($base-shadow-color, 0.2);
@@ -4472,7 +4473,7 @@ a.status-card.compact:hover {
   display: flex;
   height: 100vh;
   justify-content: center;
-  left: 0;
+  inset-inline-start: 0;
   opacity: 0;
   position: fixed;
   top: 0;
@@ -4497,9 +4498,9 @@ a.status-card.compact:hover {
 .upload-area__background {
   position: absolute;
   top: 0;
-  right: 0;
+  inset-inline-end: 0;
   bottom: 0;
-  left: 0;
+  inset-inline-start: 0;
   z-index: -1;
   border-radius: 4px;
   background: $ui-base-color;
@@ -4527,7 +4528,7 @@ a.status-card.compact:hover {
 
   .fa {
     font-size: 34px;
-    margin-right: 10px;
+    margin-inline-end: 10px;
   }
 
   span {
@@ -4553,7 +4554,7 @@ a.status-card.compact:hover {
 
 .upload-progress__tracker {
   position: absolute;
-  left: 0;
+  inset-inline-start: 0;
   top: 0;
   height: 6px;
   background: $ui-highlight-color;
@@ -4562,7 +4563,10 @@ a.status-card.compact:hover {
 
 .emoji-button {
   display: block;
-  padding: 5px 5px 2px 2px;
+  padding-top: 5px;
+  padding-bottom: 2px;
+  padding-inline-start: 2px;
+  padding-inline-end: 5px;
   outline: 0;
   cursor: pointer;
 
@@ -4650,7 +4654,7 @@ a.status-card.compact:hover {
   display: flex;
   align-items: center;
   justify-content: center;
-  margin-right: 10px;
+  margin-inline-end: 10px;
 }
 
 .privacy-dropdown__option__content {
@@ -4716,11 +4720,11 @@ a.status-card.compact:hover {
     }
 
     .emoji-mart-search {
-      padding-right: 10px;
+      padding-inline-end: 10px;
     }
 
     .emoji-mart-search-icon {
-      right: 10px + 5px;
+      inset-inline-end: 10px + 5px;
     }
 
     .emoji-mart-scroll {
@@ -4773,7 +4777,7 @@ a.status-card.compact:hover {
 
   display: block;
   padding: 15px;
-  padding-right: 30px;
+  padding-inline-end: 30px;
   line-height: 18px;
   font-size: 16px;
 
@@ -4809,7 +4813,7 @@ a.status-card.compact:hover {
   .fa {
     position: absolute;
     top: 16px;
-    right: 10px;
+    inset-inline-end: 10px;
     z-index: 2;
     display: inline-block;
     opacity: 0;
@@ -4863,7 +4867,7 @@ a.status-card.compact:hover {
 
   .fa {
     display: inline-block;
-    margin-right: 5px;
+    margin-inline-end: 5px;
   }
 }
 
@@ -4882,7 +4886,7 @@ a.status-card.compact:hover {
 
     .fa {
       display: inline-block;
-      margin-right: 5px;
+      margin-inline-end: 5px;
     }
   }
 
@@ -4920,8 +4924,8 @@ a.status-card.compact:hover {
 .modal-root__overlay {
   position: fixed;
   top: 0;
-  left: 0;
-  right: 0;
+  inset-inline-start: 0;
+  inset-inline-end: 0;
   bottom: 0;
   background: rgba($base-overlay-background, 0.7);
   transition: background 0.5s;
@@ -4930,7 +4934,7 @@ a.status-card.compact:hover {
 .modal-root__container {
   position: fixed;
   top: 0;
-  left: 0;
+  inset-inline-start: 0;
   width: 100%;
   height: 100%;
   box-sizing: border-box;
@@ -4983,16 +4987,16 @@ a.status-card.compact:hover {
 .media-modal__closer {
   position: absolute;
   top: 0;
-  left: 0;
-  right: 0;
+  inset-inline-start: 0;
+  inset-inline-end: 0;
   bottom: 0;
 }
 
 .media-modal__navigation {
   position: absolute;
   top: 0;
-  left: 0;
-  right: 0;
+  inset-inline-start: 0;
+  inset-inline-end: 0;
   bottom: 0;
   pointer-events: none;
   transition: opacity 0.3s linear;
@@ -5035,18 +5039,18 @@ a.status-card.compact:hover {
 }
 
 .media-modal__nav--left {
-  left: 0;
+  inset-inline-start: 0;
 }
 
 .media-modal__nav--right {
-  right: 0;
+  inset-inline-end: 0;
 }
 
 .media-modal__overlay {
   max-width: 600px;
   position: absolute;
-  left: 0;
-  right: 0;
+  inset-inline-start: 0;
+  inset-inline-end: 0;
   bottom: 0;
   margin: 0 auto;
 
@@ -5133,14 +5137,14 @@ a.status-card.compact:hover {
 
 .media-modal__close {
   position: absolute;
-  right: 8px;
+  inset-inline-end: 8px;
   top: 8px;
   z-index: 100;
 }
 
 .media-modal__zoom-button {
   position: absolute;
-  right: 64px;
+  inset-inline-end: 64px;
   top: 8px;
   z-index: 100;
   pointer-events: auto;
@@ -5174,7 +5178,7 @@ a.status-card.compact:hover {
   & > div {
     position: absolute;
     top: 0;
-    left: 0;
+    inset-inline-start: 0;
     width: 100%;
     height: 100%;
     box-sizing: border-box;
@@ -5270,7 +5274,7 @@ a.status-card.compact:hover {
   display: inline-block;
   max-width: 30px;
   max-height: auto;
-  margin-left: 10px;
+  margin-inline-start: 10px;
 }
 
 .boost-modal,
@@ -5325,9 +5329,9 @@ a.status-card.compact:hover {
 
   & > div {
     flex: 1 1 auto;
-    text-align: right;
+    text-align: end;
     color: $lighter-text-color;
-    padding-right: 10px;
+    padding-inline-end: 10px;
   }
 
   .button {
@@ -5530,7 +5534,7 @@ a.status-card.compact:hover {
     & > span {
       font-size: 17px;
       font-weight: 500;
-      margin-left: 10px;
+      margin-inline-start: 10px;
     }
   }
 
@@ -5554,11 +5558,11 @@ a.status-card.compact:hover {
   }
 
   .emoji-mart-search {
-    padding-right: 10px;
+    padding-inline-end: 10px;
   }
 
   .emoji-mart-search-icon {
-    right: 10px + 5px;
+    inset-inline-end: 10px + 5px;
   }
 }
 
@@ -5621,7 +5625,7 @@ a.status-card.compact:hover {
 
 .report-modal__comment {
   padding: 20px;
-  border-right: 1px solid $ui-secondary-color;
+  border-inset-inline-end: 1px solid $ui-secondary-color;
   max-width: 320px;
 
   p {
@@ -5719,7 +5723,7 @@ a.status-card.compact:hover {
         }
 
         button:first-child {
-          margin-right: 10px;
+          margin-inline-end: 10px;
         }
       }
     }
@@ -5783,7 +5787,7 @@ a.status-card.compact:hover {
     border: 1px solid darken($simple-background-color, 14%);
     border-radius: 4px;
     padding: 6px 10px;
-    padding-right: 30px;
+    padding-inline-end: 30px;
   }
 }
 
@@ -5807,7 +5811,7 @@ a.status-card.compact:hover {
     &__label {
       color: $inverted-text-color;
       margin: 0;
-      margin-left: 8px;
+      margin-inline-start: 8px;
     }
   }
 }
@@ -5818,7 +5822,7 @@ a.status-card.compact:hover {
   .report-modal__close {
     position: absolute;
     top: 10px;
-    right: 10px;
+    inset-inline-end: 10px;
   }
 }
 
@@ -5869,7 +5873,7 @@ a.status-card.compact:hover {
   height: 3px;
   position: fixed;
   top: 0;
-  left: 0;
+  inset-inline-start: 0;
   z-index: 9999;
 }
 
@@ -5879,7 +5883,7 @@ a.status-card.compact:hover {
   color: $primary-text-color;
   background: rgba($base-overlay-background, 0.5);
   bottom: 6px;
-  left: 6px;
+  inset-inline-start: 6px;
   padding: 2px 6px;
   border-radius: 2px;
   font-size: 11px;
@@ -5912,7 +5916,7 @@ a.status-card.compact:hover {
     color: $dark-text-color;
     padding: 8px 18px;
     cursor: default;
-    border-right: 1px solid lighten($ui-base-color, 8%);
+    border-inset-inline-end: 1px solid lighten($ui-base-color, 8%);
     display: flex;
     flex-direction: column;
     align-items: center;
@@ -5927,7 +5931,7 @@ a.status-card.compact:hover {
   &__list {
     list-style: none;
     padding: 4px 0;
-    padding-left: 8px;
+    padding-inline-start: 8px;
     display: flex;
     flex-direction: column;
     justify-content: center;
@@ -5977,7 +5981,7 @@ a.status-card.compact:hover {
   border: 0;
   box-sizing: border-box;
   display: block;
-  float: left;
+  float: inline-start;
   position: relative;
   border-radius: 4px;
   overflow: hidden;
@@ -6015,7 +6019,7 @@ a.status-card.compact:hover {
   object-fit: cover;
   position: absolute;
   top: 0;
-  left: 0;
+  inset-inline-start: 0;
   z-index: 0;
   background: $base-overlay-background;
 
@@ -6183,8 +6187,8 @@ a.status-card.compact:hover {
     position: absolute;
     z-index: 2;
     bottom: 0;
-    left: 0;
-    right: 0;
+    inset-inline-start: 0;
+    inset-inline-end: 0;
     box-sizing: border-box;
     background: linear-gradient(
       0deg,
@@ -6212,7 +6216,7 @@ a.status-card.compact:hover {
     display: none;
     position: absolute;
     top: 0;
-    left: 0;
+    inset-inline-start: 0;
     width: 100%;
     height: 100%;
     z-index: 4;
@@ -6328,7 +6332,7 @@ a.status-card.compact:hover {
     &.active {
       overflow: visible;
       width: 50px;
-      margin-right: 16px;
+      margin-inline-end: 16px;
     }
 
     &::before {
@@ -6339,7 +6343,7 @@ a.status-card.compact:hover {
       display: block;
       position: absolute;
       height: 4px;
-      left: 0;
+      inset-inline-start: 0;
       top: 50%;
       transform: translate(0, -50%);
     }
@@ -6349,7 +6353,7 @@ a.status-card.compact:hover {
       position: absolute;
       height: 4px;
       border-radius: 4px;
-      left: 0;
+      inset-inline-start: 0;
       top: 50%;
       transform: translate(0, -50%);
       background: lighten($ui-highlight-color, 8%);
@@ -6362,8 +6366,8 @@ a.status-card.compact:hover {
       width: 12px;
       height: 12px;
       top: 50%;
-      left: 0;
-      margin-left: -6px;
+      inset-inline-start: 0;
+      margin-inline-start: -6px;
       transform: translate(0, -50%);
       background: lighten($ui-highlight-color, 8%);
       box-shadow: 1px 2px 6px rgba($base-shadow-color, 0.2);
@@ -6434,7 +6438,7 @@ a.status-card.compact:hover {
       width: 12px;
       height: 12px;
       top: 10px;
-      margin-left: -6px;
+      margin-inline-start: -6px;
       background: lighten($ui-highlight-color, 8%);
       box-shadow: 1px 2px 6px rgba($base-shadow-color, 0.2);
 
@@ -6510,7 +6514,7 @@ a.status-card.compact:hover {
   &__icons {
     position: absolute;
     top: 50%;
-    left: 50%;
+    inset-inline-start: 50%;
     transform: translate(-50%, -50%);
     font-size: 24px;
   }
@@ -6553,7 +6557,7 @@ a.status-card.compact:hover {
         content: '';
         position: absolute;
         bottom: 0;
-        left: 50%;
+        inset-inline-start: 50%;
         width: 0;
         height: 0;
         transform: translateX(-50%);
@@ -6629,7 +6633,7 @@ a.status-card.compact:hover {
     width: 18px;
     height: 18px;
     flex: 0 0 auto;
-    margin-right: 10px;
+    margin-inline-end: 10px;
     top: -1px;
     border-radius: 50%;
     vertical-align: middle;
@@ -6706,10 +6710,10 @@ noscript {
 
   .navigation-bar {
     & > a:first-child {
-      will-change: margin-top, margin-left, margin-right, width;
+      will-change: margin-top, margin-inline-start, margin-inline-end, width;
       transition: margin-top $duration $delay,
-        margin-left $duration ($duration + $delay),
-        margin-right $duration ($duration + $delay);
+        margin-inline-start $duration ($duration + $delay),
+        margin-inline-end $duration ($duration + $delay);
     }
 
     & > .navigation-bar__profile-edit {
@@ -6891,7 +6895,7 @@ noscript {
   cursor: pointer;
   position: absolute;
   top: 0;
-  left: 0;
+  inset-inline-start: 0;
   width: 100%;
   height: 100%;
   background: rgba($base-overlay-background, 0.5);
@@ -7029,13 +7033,13 @@ noscript {
     width: 100%;
     height: 100%;
     top: 0;
-    left: 0;
+    inset-inline-start: 0;
   }
 
   &__preview {
     position: absolute;
     bottom: 10px;
-    right: 10px;
+    inset-inline-end: 10px;
     z-index: 2;
     cursor: move;
     transition: opacity 0.1s ease;
@@ -7112,7 +7116,7 @@ noscript {
   &__info {
     position: absolute;
     top: 10px;
-    left: 10px;
+    inset-inline-start: 10px;
   }
 
   &__image {
@@ -7155,7 +7159,7 @@ noscript {
     padding-top: 10px;
     gap: 8px;
     overflow: hidden;
-    margin-left: -2px; // aligns the pfp with content below
+    margin-inline-start: -2px; // aligns the pfp with content below
 
     &__buttons {
       display: flex;
@@ -7383,7 +7387,7 @@ noscript {
 
     .fa {
       display: inline-block;
-      margin-right: 5px;
+      margin-inline-end: 5px;
     }
   }
 
@@ -7433,7 +7437,7 @@ noscript {
       flex: 0 0 auto;
       font-size: 24px;
       font-weight: 500;
-      text-align: right;
+      text-align: end;
       color: $secondary-text-color;
       text-decoration: none;
     }
@@ -7538,7 +7542,7 @@ noscript {
   &__content {
     flex: 1 1 auto;
     padding: 10px 5px;
-    padding-right: 15px;
+    padding-inline-end: 15px;
     overflow: hidden;
 
     &__info {
@@ -7551,7 +7555,7 @@ noscript {
     &__relative-time {
       font-size: 15px;
       color: $darker-text-color;
-      padding-left: 15px;
+      padding-inline-start: 15px;
     }
 
     &__names {
@@ -7641,13 +7645,13 @@ noscript {
       display: block;
       font-weight: 500;
       margin-bottom: 10px;
-      padding-right: 18px;
+      padding-inline-end: 18px;
     }
 
     &__unread {
       position: absolute;
       top: 19px;
-      right: 19px;
+      inset-inline-end: 19px;
       display: block;
       background: $highlight-text-color;
       border-radius: 50%;
@@ -7661,7 +7665,7 @@ noscript {
     color: $darker-text-color;
     position: absolute;
     bottom: 3px;
-    right: 0;
+    inset-inline-end: 0;
   }
 }
 
@@ -7678,7 +7682,7 @@ noscript {
   flex-wrap: wrap;
   align-items: center;
   margin-top: 15px;
-  margin-left: -2px;
+  margin-inline-start: -2px;
   width: calc(100% - (90px - 33px));
 
   &__item {
@@ -7719,7 +7723,7 @@ noscript {
       font-size: 13px;
       font-weight: 500;
       text-align: center;
-      margin-left: 6px;
+      margin-inline-start: 6px;
       color: $darker-text-color;
     }
 
@@ -7798,10 +7802,10 @@ noscript {
       content: '';
       position: absolute;
       top: 0;
-      left: 0;
+      inset-inline-start: 0;
       width: 100%;
       height: 100%;
-      border-left: 4px solid $highlight-text-color;
+      border-inset-inline-start: 4px solid $highlight-text-color;
       pointer-events: none;
     }
   }
@@ -7810,7 +7814,7 @@ noscript {
 .picture-in-picture {
   position: fixed;
   bottom: 20px;
-  right: 20px;
+  inset-inline-end: 20px;
   width: 300px;
 
   &__footer {
@@ -7836,7 +7840,7 @@ noscript {
     }
 
     .account__avatar {
-      margin-right: 10px;
+      margin-inline-end: 10px;
     }
 
     .display-name {
@@ -7902,7 +7906,7 @@ noscript {
   &__close {
     position: absolute;
     top: 10px;
-    right: 10px;
+    inset-inline-end: 10px;
   }
 
   h2 {
@@ -7937,7 +7941,7 @@ noscript {
 
   .search .fa {
     top: 10px;
-    right: 10px;
+    inset-inline-end: 10px;
     color: $dark-text-color;
   }
 
@@ -8021,7 +8025,7 @@ noscript {
       object-fit: fill;
       position: absolute;
       top: 0;
-      left: 0;
+      inset-inline-start: 0;
       z-index: 0;
 
       &--hidden {
@@ -8107,7 +8111,7 @@ noscript {
   }
 
   .account__avatar-wrapper {
-    margin-left: 0;
+    margin-inline-start: 0;
   }
 
   .spacer {
@@ -8327,7 +8331,7 @@ noscript {
     &::before {
       content: counter(list-counter) '.';
       position: absolute;
-      left: 0;
+      inset-inline-start: 0;
     }
   }
 
@@ -8339,13 +8343,13 @@ noscript {
     width: 0.375em;
     height: 0.375em;
     top: 0.5em;
-    left: 0.25em;
+    inset-inline-start: 0.25em;
   }
 
   ul > li,
   ol > li {
     position: relative;
-    padding-left: 1.75em;
+    padding-inline-start: 1.75em;
   }
 
   & > ul > li p {
@@ -8478,7 +8482,7 @@ noscript {
   &__preview {
     position: absolute;
     top: 0;
-    left: 0;
+    inset-inline-start: 0;
     width: 100%;
     height: 100%;
     object-fit: cover;
@@ -8684,7 +8688,7 @@ noscript {
   }
 
   .account__avatar-wrapper {
-    margin-left: 0;
+    margin-inline-start: 0;
   }
 
   .account__relationship {
diff --git a/app/javascript/styles/mastodon/containers.scss b/app/javascript/styles/mastodon/containers.scss
index b49b93984..fb71ad034 100644
--- a/app/javascript/styles/mastodon/containers.scss
+++ b/app/javascript/styles/mastodon/containers.scss
@@ -18,7 +18,7 @@
 
     .logo {
       height: 42px;
-      margin-right: 10px;
+      margin-inline-end: 10px;
     }
 
     a {
@@ -73,7 +73,7 @@
   .avatar {
     width: 40px;
     height: 40px;
-    margin-right: 10px;
+    margin-inline-end: 10px;
 
     img {
       width: 100%;
@@ -101,6 +101,6 @@
     display: block;
     font-size: 32px;
     line-height: 40px;
-    margin-left: 10px;
+    margin-inline-start: 10px;
   }
 }
diff --git a/app/javascript/styles/mastodon/emoji_picker.scss b/app/javascript/styles/mastodon/emoji_picker.scss
index 0d7a7df2e..c7247c3a5 100644
--- a/app/javascript/styles/mastodon/emoji_picker.scss
+++ b/app/javascript/styles/mastodon/emoji_picker.scss
@@ -71,7 +71,7 @@
 .emoji-mart-anchor-bar {
   position: absolute;
   bottom: -5px;
-  left: 0;
+  inset-inline-start: 0;
   width: 100%;
   height: 4px;
   background-color: $highlight-text-color;
@@ -106,7 +106,7 @@
 
 .emoji-mart-search {
   padding: 10px;
-  padding-right: 45px;
+  padding-inline-end: 45px;
   background: $simple-background-color;
   position: relative;
 
@@ -114,7 +114,7 @@
     font-size: 16px;
     font-weight: 400;
     padding: 7px 9px;
-    padding-right: 25px;
+    padding-inline-end: 25px;
     font-family: inherit;
     display: block;
     width: 100%;
@@ -142,7 +142,7 @@
 .emoji-mart-search-icon {
   position: absolute;
   top: 18px;
-  right: 45px + 5px;
+  inset-inline-end: 45px + 5px;
   z-index: 2;
   padding: 2px 5px 1px;
   border: 0;
@@ -177,7 +177,7 @@
     content: '';
     position: absolute;
     top: 0;
-    left: 0;
+    inset-inline-start: 0;
     width: 100%;
     height: 100%;
     background-color: rgba($ui-secondary-color, 0.7);
diff --git a/app/javascript/styles/mastodon/forms.scss b/app/javascript/styles/mastodon/forms.scss
index e4539deff..7d4bde5e9 100644
--- a/app/javascript/styles/mastodon/forms.scss
+++ b/app/javascript/styles/mastodon/forms.scss
@@ -54,12 +54,12 @@ code {
 
       .radio > label {
         position: relative;
-        padding-left: 28px;
+        padding-inline-start: 28px;
 
         input {
           position: absolute;
           top: -2px;
-          left: 0;
+          inset-inline-start: 0;
         }
       }
     }
@@ -79,7 +79,7 @@ code {
 
       .label_input,
       .hint {
-        padding-left: 28px;
+        padding-inline-start: 28px;
       }
 
       .label_input__wrapper {
@@ -89,7 +89,7 @@ code {
       label.checkbox {
         position: absolute;
         top: 2px;
-        left: 0;
+        inset-inline-start: 0;
       }
 
       label a {
@@ -159,7 +159,7 @@ code {
 
     li {
       list-style: disc;
-      margin-left: 18px;
+      margin-inline-start: 18px;
     }
   }
 
@@ -225,7 +225,7 @@ code {
 
     &.select .hint {
       margin-top: 6px;
-      margin-left: 150px;
+      margin-inline-start: 150px;
     }
   }
 
@@ -380,13 +380,13 @@ code {
         width: auto;
         position: relative;
         padding-top: 5px;
-        padding-left: 25px;
+        padding-inline-start: 25px;
         flex: 1 1 auto;
       }
 
       input[type='checkbox'] {
         position: absolute;
-        left: 0;
+        inset-inline-start: 0;
         top: 5px;
         margin: 0;
       }
@@ -517,10 +517,10 @@ code {
     font-weight: 500;
     outline: 0;
     margin-bottom: 10px;
-    margin-right: 10px;
+    margin-inline-end: 10px;
 
     &:last-child {
-      margin-right: 0;
+      margin-inline-end: 0;
     }
 
     &:active,
@@ -572,8 +572,8 @@ code {
       no-repeat right 8px center / auto 16px;
     border: 1px solid darken($ui-base-color, 14%);
     border-radius: 4px;
-    padding-left: 10px;
-    padding-right: 30px;
+    padding-inline-start: 10px;
+    padding-inline-end: 30px;
     height: 41px;
   }
 
@@ -588,7 +588,7 @@ code {
 
     &__append {
       position: absolute;
-      right: 3px;
+      inset-inline-end: 3px;
       top: 1px;
       padding: 10px;
       padding-bottom: 9px;
@@ -606,7 +606,7 @@ code {
         display: block;
         position: absolute;
         top: 0;
-        right: 0;
+        inset-inline-end: 0;
         bottom: 1px;
         width: 5px;
         background-image: linear-gradient(
@@ -780,7 +780,7 @@ code {
 
   li {
     display: inline-block;
-    margin-right: 10px;
+    margin-inline-end: 10px;
   }
 
   a {
@@ -939,7 +939,7 @@ code {
 
   .actions {
     padding: 30px 0;
-    padding-right: 20px;
+    padding-inline-end: 20px;
     flex: 0 0 auto;
   }
 }
@@ -992,7 +992,7 @@ code {
   border-radius: 4px;
   display: flex;
   align-items: center;
-  padding-right: 4px;
+  padding-inline-end: 4px;
   position: relative;
   top: 1px;
   transition: border-color 300ms linear;
diff --git a/app/javascript/styles/mastodon/modal.scss b/app/javascript/styles/mastodon/modal.scss
index 6170877b2..29b1f162b 100644
--- a/app/javascript/styles/mastodon/modal.scss
+++ b/app/javascript/styles/mastodon/modal.scss
@@ -25,7 +25,7 @@
       height: 100%;
       position: absolute;
       bottom: 0;
-      left: 0;
+      inset-inline-start: 0;
     }
   }
 }
diff --git a/app/javascript/styles/mastodon/polls.scss b/app/javascript/styles/mastodon/polls.scss
index b30932e04..bdb87d7cf 100644
--- a/app/javascript/styles/mastodon/polls.scss
+++ b/app/javascript/styles/mastodon/polls.scss
@@ -269,7 +269,7 @@
     border: 1px solid darken($simple-background-color, 14%);
     border-radius: 4px;
     padding: 6px 10px;
-    padding-right: 30px;
+    padding-inline-end: 30px;
   }
 
   .icon-button.disabled {
diff --git a/app/javascript/styles/mastodon/rich_text.scss b/app/javascript/styles/mastodon/rich_text.scss
index 35901984b..aa41e4ad3 100644
--- a/app/javascript/styles/mastodon/rich_text.scss
+++ b/app/javascript/styles/mastodon/rich_text.scss
@@ -13,8 +13,8 @@
   }
 
   blockquote {
-    padding-left: 10px;
-    border-left: 3px solid $darker-text-color;
+    padding-inline-start: 10px;
+    border-inset-inline-start: 3px solid $darker-text-color;
     color: $darker-text-color;
     white-space: normal;
 
@@ -40,7 +40,7 @@
 
   ul,
   ol {
-    margin-left: 2em;
+    margin-inline-start: 2em;
 
     p {
       margin: 0;
diff --git a/app/javascript/styles/mastodon/rtl.scss b/app/javascript/styles/mastodon/rtl.scss
index e60087dab..726135c58 100644
--- a/app/javascript/styles/mastodon/rtl.scss
+++ b/app/javascript/styles/mastodon/rtl.scss
@@ -1,273 +1,30 @@
 body.rtl {
   direction: rtl;
 
-  .column-header > button {
-    text-align: right;
-    padding-left: 0;
-    padding-right: 15px;
-  }
-
-  .radio-button__input {
-    margin-right: 0;
-    margin-left: 10px;
-  }
-
-  .display-name,
-  .announcements__item {
-    text-align: right;
-  }
-
-  .announcements__item__range {
-    padding-right: 0;
-    padding-left: 18px;
-  }
-
   .reactions-bar {
-    margin-left: auto;
-    margin-right: -2px;
     direction: rtl;
   }
 
-  .reactions-bar__item__count {
-    margin-left: 0;
-    margin-right: 6px;
-  }
-
-  .announcements__pagination {
-    right: auto;
-    left: 0;
-  }
-
-  .notification__message {
-    margin-left: 0;
-    margin-right: 68px;
-  }
-
   .announcements__mastodon,
   .drawer__inner__mastodon > img {
     transform: scaleX(-1);
   }
 
-  .notification__favourite-icon-wrapper {
-    left: auto;
-    right: -26px;
-  }
-
-  .column-link__icon,
-  .column-header__icon {
-    margin-right: 0;
-    margin-left: 5px;
-  }
-
-  .compose-form .compose-form__buttons-wrapper .character-counter__wrapper {
-    margin-right: 0;
-    margin-left: 4px;
-  }
-
-  .navigation-bar__profile {
-    margin-left: 0;
-    margin-right: 8px;
-  }
-
-  .search__input {
+  .compose-form .autosuggest-textarea__textarea {
     padding-right: 10px;
-    padding-left: 30px;
-  }
-
-  .search__icon .fa {
-    right: auto;
-    left: 10px;
+    padding-left: 10px + 22px;
   }
 
   .columns-area {
     direction: rtl;
   }
 
-  .column-header__buttons {
-    left: 0;
-    right: auto;
-    margin-left: 0;
-    margin-right: -15px;
-  }
-
-  .column-inline-form .icon-button {
-    margin-left: 0;
-    margin-right: 5px;
-  }
-
-  .column-header__links .text-btn {
-    margin-left: 10px;
-    margin-right: 0;
-  }
-
-  .account__avatar-wrapper {
-    float: right;
-  }
-
-  .column-header__back-button {
-    padding-left: 5px;
-    padding-right: 0;
-  }
-
-  .column-header__setting-arrows {
-    float: left;
-
-    .column-header__setting-btn {
-      &:first-child {
-        padding-left: 7px;
-        padding-right: 5px;
-      }
-
-      &:last-child {
-        padding-right: 7px;
-        padding-left: 5px;
-        margin-right: 5px;
-        margin-left: 0;
-      }
-    }
-  }
-
-  .setting-toggle__label {
-    margin-left: 0;
-    margin-right: 8px;
-  }
-
-  .account__header__tabs__buttons > .icon-button {
-    margin-right: 0;
-    margin-left: 8px;
-  }
-
-  .account__avatar-overlay-overlay {
-    right: auto;
-    left: 0;
-  }
-
-  .column-back-button--slim-button {
-    right: auto;
-    left: 0;
-  }
-
-  .status__action-bar {
-    &__counter {
-      margin-right: 0;
-      margin-left: 11px;
-
-      .status__action-bar-button {
-        margin-right: 0;
-        margin-left: 4px;
-      }
-    }
-  }
-
-  .privacy-dropdown__dropdown {
-    margin-left: 0;
-    margin-right: 40px;
-  }
-
-  .privacy-dropdown__option__icon {
-    margin-left: 10px;
-    margin-right: 0;
-  }
-
-  .picture-in-picture__header__account .display-name,
-  .detailed-status__display-name .display-name {
-    text-align: right;
-  }
-
-  .detailed-status__display-avatar {
-    margin-right: 0;
-    margin-left: 10px;
-  }
-
-  .picture-in-picture__header__account .account__avatar {
-    margin-right: 0;
-    margin-left: 10px;
-  }
-
-  .icon-button__counter {
-    margin-left: 0;
-    margin-right: 4px;
-  }
-
-  .notifications-permission-banner__close {
-    right: auto;
-    left: 10px;
-  }
-
-  .detailed-status__favorites,
-  .detailed-status__reblogs {
-    margin-left: 0;
-    margin-right: 6px;
-  }
-
-  .fa-ul {
-    margin-left: 2.14285714em;
-  }
-
-  .fa-li {
-    left: auto;
-    right: -2.14285714em;
-  }
-
   .admin-wrapper {
     direction: rtl;
   }
 
-  .admin-wrapper .sidebar ul a i.fa,
-  a.table-action-link i.fa {
-    margin-right: 0;
-    margin-left: 5px;
-  }
-
-  .simple_form .check_boxes .checkbox label {
-    padding-left: 0;
-    padding-right: 25px;
-  }
-
-  .simple_form .input.with_label.boolean label.checkbox {
-    padding-left: 25px;
-    padding-right: 0;
-  }
-
-  .simple_form .check_boxes .checkbox input[type='checkbox'],
-  .simple_form .input.boolean input[type='checkbox'] {
-    left: auto;
-    right: 0;
-  }
-
-  .simple_form .input.radio_buttons .radio {
-    left: auto;
-    right: 0;
-  }
-
-  .simple_form .input.radio_buttons .radio > label {
-    padding-right: 28px;
-    padding-left: 0;
-  }
-
-  .simple_form .input-with-append .input input {
-    padding-left: 142px;
-    padding-right: 0;
-  }
-
-  .simple_form .input.boolean label.checkbox {
-    left: auto;
-    right: 0;
-  }
-
-  .simple_form .input.boolean .label_input,
-  .simple_form .input.boolean .hint {
-    padding-left: 0;
-    padding-right: 28px;
-  }
-
   .simple_form .label_input__append {
-    right: auto;
-    left: 3px;
-
     &::after {
-      right: auto;
-      left: 0;
       background-image: linear-gradient(
         to left,
         rgba(darken($ui-base-color, 10%), 0),
@@ -282,49 +39,6 @@ body.rtl {
       no-repeat left 8px center / auto 16px;
   }
 
-  .table th,
-  .table td {
-    text-align: right;
-  }
-
-  .filters .filter-subset {
-    margin-right: 0;
-    margin-left: 45px;
-  }
-
-  @media screen and (min-width: 631px) {
-    .column,
-    .drawer {
-      padding-left: 5px;
-      padding-right: 5px;
-
-      &:first-child {
-        padding-left: 5px;
-        padding-right: 10px;
-      }
-    }
-
-    .columns-area > div {
-      .column,
-      .drawer {
-        padding-left: 5px;
-        padding-right: 5px;
-      }
-    }
-  }
-
-  .columns-area--mobile .column,
-  .columns-area--mobile .drawer {
-    padding-left: 0;
-    padding-right: 0;
-  }
-
-  .card__bar .display-name {
-    margin-left: 0;
-    margin-right: 15px;
-    text-align: right;
-  }
-
   .fa-chevron-left::before {
     content: '\F054';
   }
@@ -332,19 +46,4 @@ body.rtl {
   .fa-chevron-right::before {
     content: '\F053';
   }
-
-  .column-back-button__icon {
-    margin-right: 0;
-    margin-left: 5px;
-  }
-
-  .simple_form .input.radio_buttons .radio > label input {
-    left: auto;
-    right: 0;
-  }
-
-  .picture-in-picture {
-    right: auto;
-    left: 20px;
-  }
 }
diff --git a/app/javascript/styles/mastodon/statuses.scss b/app/javascript/styles/mastodon/statuses.scss
index a42f1f42c..6c9ea916a 100644
--- a/app/javascript/styles/mastodon/statuses.scss
+++ b/app/javascript/styles/mastodon/statuses.scss
@@ -97,7 +97,7 @@
     width: 20px;
     height: auto;
     vertical-align: middle;
-    margin-right: 5px;
+    margin-inline-end: 5px;
     fill: $primary-text-color;
   }
 
@@ -162,7 +162,7 @@ a.button.logo-button {
     min-height: 48px + 2px;
 
     &__avatar {
-      left: 15px;
+      inset-inline-start: 15px;
       top: 17px;
 
       .account__avatar {
@@ -176,12 +176,12 @@ a.button.logo-button {
     }
 
     &__prepend {
-      margin-left: 48px + 15px * 2;
+      margin-inline-start: 48px + 15px * 2;
       padding-top: 15px;
     }
 
     &__prepend-icon-wrapper {
-      left: -32px;
+      inset-inline-start: -32px;
     }
 
     .media-gallery,
diff --git a/app/javascript/styles/mastodon/tables.scss b/app/javascript/styles/mastodon/tables.scss
index b644b38f1..fb1ff0781 100644
--- a/app/javascript/styles/mastodon/tables.scss
+++ b/app/javascript/styles/mastodon/tables.scss
@@ -10,7 +10,7 @@
     line-height: 18px;
     vertical-align: top;
     border-top: 1px solid $ui-base-color;
-    text-align: left;
+    text-align: start;
     background: darken($ui-base-color, 4%);
   }
 
@@ -91,12 +91,12 @@
 
       &:first-child {
         border-radius: 4px 0 0;
-        border-left: 1px solid darken($ui-base-color, 8%);
+        border-inset-inline-start: 1px solid darken($ui-base-color, 8%);
       }
 
       &:last-child {
         border-radius: 0 4px 0 0;
-        border-right: 1px solid darken($ui-base-color, 8%);
+        border-inset-inline-end: 1px solid darken($ui-base-color, 8%);
       }
     }
   }
@@ -125,7 +125,7 @@ button.table-action-link,
 a.table-action-link {
   text-decoration: none;
   display: inline-block;
-  margin-right: 5px;
+  margin-inline-end: 5px;
   padding: 0 10px;
   color: $darker-text-color;
   font-weight: 500;
@@ -136,11 +136,11 @@ a.table-action-link {
 
   i.fa {
     font-weight: 400;
-    margin-right: 5px;
+    margin-inline-end: 5px;
   }
 
   &:first-child {
-    padding-left: 0;
+    padding-inline-start: 0;
   }
 }
 
@@ -172,7 +172,7 @@ a.table-action-link {
     &__actions,
     &__content {
       padding: 8px 0;
-      padding-right: 16px;
+      padding-inline-end: 16px;
       flex: 1 1 auto;
     }
   }
@@ -188,8 +188,8 @@ a.table-action-link {
     align-items: center;
 
     &__actions {
-      text-align: right;
-      padding-right: 16px - 5px;
+      text-align: end;
+      padding-inline-end: 16px - 5px;
     }
   }
 
@@ -296,7 +296,7 @@ a.table-action-link {
         display: flex;
         justify-content: center;
         align-items: center;
-        margin-right: 10px;
+        margin-inline-end: 10px;
 
         .emojione {
           width: 32px;
@@ -315,7 +315,7 @@ a.table-action-link {
 
       &__extra {
         flex: 0 0 auto;
-        text-align: right;
+        text-align: end;
         color: $darker-text-color;
         font-weight: 500;
       }
diff --git a/app/javascript/styles/mastodon/widgets.scss b/app/javascript/styles/mastodon/widgets.scss
index ef7bfc6de..1f69f0cf0 100644
--- a/app/javascript/styles/mastodon/widgets.scss
+++ b/app/javascript/styles/mastodon/widgets.scss
@@ -39,8 +39,8 @@
       width: 20px;
       height: 20px;
       margin: -3px 0 0;
-      margin-left: 0.075em;
-      margin-right: 0.075em;
+      margin-inline-start: 0.075em;
+      margin-inline-end: 0.075em;
     }
 
     p {
@@ -171,7 +171,7 @@
     margin-bottom: 15px;
 
     .fa {
-      margin-right: 5px;
+      margin-inline-end: 5px;
       color: $darker-text-color;
     }
   }
@@ -284,7 +284,7 @@
     }
 
     .trends__item__current {
-      padding-right: 0;
+      padding-inline-end: 0;
     }
   }
 }
@@ -309,7 +309,7 @@
     padding: 10px;
 
     &:first-child {
-      text-align: left;
+      text-align: start;
     }
   }
 
@@ -340,9 +340,9 @@
 
   tbody td.accounts-table__extra {
     width: 120px;
-    text-align: right;
+    text-align: end;
     color: $darker-text-color;
-    padding-right: 16px;
+    padding-inline-end: 16px;
 
     a {
       text-decoration: none;
@@ -363,7 +363,7 @@
 
   tbody td.accounts-table__interrelationships {
     width: 21px;
-    padding-right: 16px;
+    padding-inline-end: 16px;
   }
 
   .fa {