Update static/index.html

static/index.html

@@ -60,7 +60,7 @@
             resize: none;
             padding: 12px;
             font-size: 1em;
-            width: calc(100% - 48px);
+            width: calc(10% - 48px);
         }
         #user-input:focus {
             border-color: #007bff;