room number logic improvement

web/index.html

@@ -76,6 +76,13 @@
             <div class="ts horizontal divider">or</div>
             <button id="random" class="ts primary button">隨機配對</button>
         </div>
-    <script src="./menu.js"></script>
+    </div>
+    <!-- Anchor -->
+    <!-- snackbar -->
+    <div class="ts bottom right snackbar">
+        <div class="content"></div>
+        <a class="action"></a>
+    </div>
 </body>
+<script src="./menu.js"></script>
 </html>