Fixed last push event banner not being in container

Closes #18567

app/assets/stylesheets/framework/blocks.scss

@@ -91,6 +91,10 @@
     background-color: $white-light;
     border-top: none;
   }
+
+  &.top-block .container-fluid {
+    background-color: inherit;
+  }
 }
 
 .cover-block {

app/views/projects/_last_push.html.haml

@@ -1,15 +1,15 @@
 - if event = last_push_event
   - if show_last_push_widget?(event)
-
     .row-content-block.top-block.clear-block.hidden-xs
-      .event-last-push
-        .event-last-push-text
-          %span You pushed to
-          = link_to namespace_project_commits_path(event.project.namespace, event.project, event.ref_name) do
-            %strong= event.ref_name
-          branch
-          #{time_ago_with_tooltip(event.created_at)}
+      %div{ class: (container_class) }
+        .event-last-push
+          .event-last-push-text
+            %span You pushed to
+            = link_to namespace_project_commits_path(event.project.namespace, event.project, event.ref_name) do
+              %strong= event.ref_name
+            branch
+            #{time_ago_with_tooltip(event.created_at)}
 
-        .pull-right
-          = link_to new_mr_path_from_push_event(event), title: "New Merge Request", class: "btn btn-info btn-sm" do
-            Create Merge Request
+          .pull-right
+            = link_to new_mr_path_from_push_event(event), title: "New Merge Request", class: "btn btn-info btn-sm" do
+              Create Merge Request