Update templates/index.html

templates/index.html

@@ -392,6 +392,7 @@
         .attach-btn {
             background: none; border: none; padding: 6px; color: #666; cursor: pointer;
             display: flex; align-items: center; justify-content: center; transition: all 0.2s;
+            margin-bottom: 2px;
         }
         .attach-btn:hover { color: #5a67d8; }