update the file storage selector

app/views/email_settings/index.html.erb

@@ -33,10 +33,8 @@
           <%= ff.email_field :from_email, value: value['from_email'], required: true, class: 'base-input' %>
         </div>
       <% end %>
-      <div>
-        <div class="form-control mt-8">
-          <%= f.button button_title, class: 'base-button' %>
-        </div>
+      <div class="form-control">
+        <%= f.button button_title, class: 'base-button' %>
       </div>
     <% end %>
   </div>