Improve devise views

app/views/devise/sessions/new.html.erb

@@ -5,14 +5,17 @@
     <%= render "devise/shared/error_messages", resource: resource %>
     <p>
       <%= f.label :cn, 'User', class: 'block' %>
-      <%= f.text_field :cn, autofocus: true, autocomplete: "username" %> @ kosmos.org
+      <%= f.text_field :cn, autofocus: true, autocomplete: "username",
+                            class: "w-full md:w-3/5"%>
+      <span class="ml-1 text-gray-500">@ kosmos.org</span>
     </p>
     <p>
       <%= f.label :password, class: 'block' %>
-      <%= f.password_field :password, autocomplete: "current-password" %>
+      <%= f.password_field :password, autocomplete: "current-password",
+                                      class: "w-full md:w-3/5"%>
     </p>
     <p class="mt-8">
-      <%= f.submit "Log in", class: 'btn-md btn-blue' %>
+      <%= f.submit "Log in", class: 'btn-md btn-blue w-full md:w-auto' %>
     </p>
   <% end %>