Improve no-connection page

public/assets/style.css

@@ -312,6 +312,14 @@ dl.flags {
   line-height: 1.4em;
 }
 
+/* No connection */
+.sad {
+  font-size: 100px;
+  text-align: center;
+  margin-top: 20px;
+  color: rgba(255, 255, 255, 0.6);
+}
+
 /* Footer */
 footer {
   margin-top: 2em;

views/no-connection.html

@@ -4,6 +4,7 @@
 
   <h2>No connection</h2>
   <div class="content">
-    <p>You don't have a stable internet connection.</p>
+    <p>There seems to be an issue connecting to the server.</p>
   </div>
+  <div class="sad">:(</div>
 {% endblock %}