Add gl-button to dismis feature highlight button

app/views/layouts/nav/sidebar/_project.html.haml

@@ -300,8 +300,8 @@
                         = link_to _('Auto DevOps'), help_page_path('topics/autodevops/index.md')
                         %span= _('uses Kubernetes clusters to deploy your code!')
                       %hr
-                      %button.btn.btn-success.btn-sm.dismiss-feature-highlight{ type: 'button' }
-                        %span= _("Got it!")
+                      %button.gl-button.btn.btn-success.btn-sm.dismiss-feature-highlight{ type: 'button' }
+                        %span.gl-mr-2= _("Got it!")
                         = sprite_icon('thumb-up')
 
             - if project_nav_tab? :environments