body {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
            background-color: #001f3f;
            color: #fff;
        }
        .game-title {
            font-family: 'Poppins', sans-serif;
            font-size: 2.5rem;
            font-weight: 600;
            color: #00d1ff;
            text-shadow: 2px 2px 4px #000;
            margin-bottom: 30px;
            border: 3px solid #00d1ff;
            padding: 10px 20px;
            border-radius: 10px;
        }
        .game-grid {
            display: grid;
            grid-template-columns: repeat(2, 120px);
            grid-gap: 20px;
        }
        .game-btn {
            width: 120px;
            height: 120px;
            border: 7px solid #1e1e1e;
            border-radius: 15px;
            outline: none;
            cursor: pointer;
            transition: transform 0.1s, box-shadow 0.3s;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }
        .game-btn:active {
            transform: scale(0.95);
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        .green {
            background-color: green;
        }
        .red {
            background-color: red;
        }
        .yellow {
            background-color: yellow;
        }
        .blue {
            background-color: blue;
        }
        .pressed {
            opacity: 0.6;
        }