body {
            margin: 0;
            font-family: Arial, sans-serif;
            background: #f4f4f4;
        }
        header {
            background: #333;
            color: #fff;
            padding: 15px;
            text-align: center;
        }
        nav {
            background: #444;
            padding: 10px;
            text-align: center;
        }
        nav a {
            color: #fff;
            text-decoration: none;
            margin: 0 10px;
            font-weight: bold;
        }
        .section {
            padding: 20px;
            max-width: 800px;
            margin: auto;
            background: #fff;
            border-radius: 8px;
            margin-top: 20px;
        }
        h2 { color: #333; }
        footer {
            text-align: center;
            padding: 15px;
            margin-top: 20px;
            background: #333;
            color: #fff;
        }
        form input, form textarea {
            width: 100%;
            padding: 10px;
            margin: 10px 0;
            border: 1px solid #ccc;
            border-radius: 5px;
        }
        button {
            padding: 10px 20px;
            background: #333;
            color: #fff;
            border: none;
            border-radius: 5px;
            cursor: pointer;
        }