Fix styling of revert MR modal

app/views/projects/commit/_change.html.haml

@@ -20,11 +20,12 @@
           %span{ "aria-hidden": true } ×
       .modal-body
         - if description
-          %p.append-bottom-20= description
+          %p= description
         = form_tag [type.underscore, @project.namespace.becomes(Namespace), @project, commit], method: :post, remote: false, class: "js-#{type}-form js-requires-input" do
           .form-group.row.branch
-            = label_tag 'start_branch', branch_label, class: 'col-form-label col-sm-2'
-            .col-sm-10
+            .col-sm-12
+              = label_tag 'start_branch', branch_label, class: 'label-light'
+
               = hidden_field_tag :start_branch, @project.default_branch, id: 'start_branch'
               = dropdown_tag(@project.default_branch, options: { title: s_("BranchSwitcherTitle|Switch branch"), filter: true, placeholder: s_("BranchSwitcherPlaceholder|Search branches"), toggle_class: 'js-project-refs-dropdown dynamic', dropdown_class: 'dropdown-menu-selectable', data: { field_name: "start_branch", selected: @project.default_branch, start_branch: @project.default_branch, refs_url: project_branches_path(@project), submit_form_on_click: false } })
 

app/views/shared/_new_merge_request_checkbox.html.haml

-.form-check
+.form-check.prepend-top-8
   - nonce = SecureRandom.hex
   = check_box_tag 'create_merge_request', 1, true, class: 'js-create-merge-request form-check-input', id: "create_merge_request-#{nonce}"
   = label_tag "create_merge_request-#{nonce}", class: 'form-check-label' do