Update templates/index.html

templates/index.html

@@ -413,6 +413,7 @@
             width: 40px; height: 40px; border-radius: 50%;
             display: flex; align-items: center; justify-content: center;
             cursor: pointer; transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+            margin-bottom: 2px;
             flex-shrink: 0;
         }
         .send-btn:hover { background-color: #111; }