body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            line-height: 1.6;
            background-color: #e3e3e5;
            color: #403f4c;
        }
        header, footer {
            text-align: center;
            padding: 20px;
            background-color: #403f4c;
            color: #fff;
        }
        main {
            max-width: 800px;
            margin: 20px auto;
            padding: 20px;
            background-color: #e3e3e5;
            border-radius: 5px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }
        h2 {
            color: #403f4c;
        }
        ul {
            list-style: decimal;
            padding: 0 20px;
        }
        ul li {
            margin-bottom: 8px;
        }
        a {
            text-decoration: none;
            color: #007bff;
        }
        a:hover {
            text-decoration: underline;
        }
        .block {
            background: #e3e3e5;
            border: 1px solid #2f313e;
            border-radius: 5px;
            padding: 10px;
            margin-bottom: 20px;
        }
        .code-container {
            position: relative;
            background: #2b313f;
            color: #61dafb;
            padding: 20px;
            border-radius: 5px;
            overflow-x: auto;
        }
        .copy-button {
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: #61dafb;
            color: #282c34;
            padding: 8px 16px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }
        .copy-button:hover {
            background-color: #21a1f1;
        }
        footer {
            text-align: center;
            padding: 10px 0;
            position: fixed;
            bottom: 0;
            width: 100%;
        }