Fix admin-facing uses of inline CSS (#13575)

* Move .back-button inline styles to CSS file

All occurrences of the back-button CSS class used the same inline
CSS rules, so moved them over to the CSS file

* Fix “Add new domain block” button using inline CSS

* Replace common pattern of inline-styled button boxes by a CSS class

In particular, switching from `float: left/right` to a flexbox with
`justify-content: space-between`. This implied changing the order of
a few HTML tags and adding an empty `div` in one case.

Also removed a `margin-bottom` rule that wasn't needed due to the
margins of surrounding elements.

* Move account admin view inline CSS to CSS file

1 files changed, 4 insertions, 4 deletions

diff --git a/app/views/admin/tags/index.html.haml b/app/views/admin/tags/index.html.haml
index 1ff538ba3..2acdaa8fa 100644
--- a/app/views/admin/tags/index.html.haml
+++ b/app/views/admin/tags/index.html.haml
@@ -71,9 +71,9 @@
 - if params[:pending_review] == '1' || params[:unreviewed] == '1'
   %hr.spacer/
 
-  %div{ style: 'overflow: hidden' }
-    %div{ style: 'float: right' }
-      = link_to t('admin.accounts.reject_all'), reject_all_admin_tags_path, method: :post, data: { confirm: t('admin.accounts.are_you_sure') }, class: 'button button--destructive'
-
+  %div.action-buttons
     %div
       = link_to t('admin.accounts.approve_all'), approve_all_admin_tags_path, method: :post, data: { confirm: t('admin.accounts.are_you_sure') }, class: 'button'
+
+    %div
+      = link_to t('admin.accounts.reject_all'), reject_all_admin_tags_path, method: :post, data: { confirm: t('admin.accounts.are_you_sure') }, class: 'button button--destructive'