Create static/styles.css

static/styles.css

@@ -0,0 +1,17 @@
+#container {
+    width: 800px;
+    height: 600px;
+    border: 1px solid #ccc;
+    margin: 20px auto;
+}
+
+#controls {
+    text-align: center;
+    margin-bottom: 10px;
+}
+
+button {
+    padding: 10px 20px;
+    margin: 5px;
+    cursor: pointer;
+}