body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            text-align: center;
        }
        .container {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        canvas {
            border: 1px solid #ccc;
            margin: 20px 0;
            background-color: #f0f8ff;
        }
        .controls {
            margin: 20px 0;
            width: 100%;
        }
        .slider-container {
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 10px;
        }
        label {
            margin-right: 10px;
            width: 100px;
            text-align: right;
        }
        input[type="range"] {
            width: 300px;
            margin-right: 10px;
        }
        .value-display {
            width: 50px;
            text-align: left;
        }
        .info {
            margin-top: 20px;
            padding: 10px;
            background-color: #f0f0f0;
            border-radius: 5px;
        }
        .warning {
            color: red;
            font-weight: bold;
            margin-top: 10px;
        }
        .copyright {
            margin-top: 30px;
            color: #666;
            font-size: 14px;
        }