finetune border width

css/style.css

@@ -118,6 +118,11 @@ gradio-app {
     align-self: center;
 }
 #tools_area .form {
+    --border-width: 3px;
+    --shadow-size: 1px;
+    --shadow-y: 1px;
+    --shadow-x: 1px;
+
     display: flex;
     flex-direction: row;
     flex-wrap: wrap;