Update style.css

visualizer/style.css

@@ -34,3 +34,29 @@ button {
     height: 600px;
     border: 1px solid #ccc;
 }
+
+body {
+    margin: 0;
+    padding: 0;
+}
+
+canvas {
+    width: 100%;
+    height: 100%
+}
+
+#controls {
+    position: absolute;
+    top: 10px;
+    left: 10px;
+    z-index: 10;
+    background-color: rgba(0, 0, 0, 0.7);
+    padding: 20px;
+    color: white;
+    font-family: Arial, sans-serif;
+}
+
+input {
+    margin-bottom: 10px;
+    width: 100px;
+}