x;
            padding: 30px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        h1 {
            color: #333;
            margin-bottom: 30px;
        }
        .controls {
            margin-bottom: 20px;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        button {
            background: #4CAF50;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 4px;
            cursor: pointer;
  