body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; background-color: #f5f5f5; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { background-color: #ff6600; color: white; padding: 15px; text-align: center; }
        header h1 { margin: 0; }
        nav { background-color: #333; overflow: hidden; }
        nav a { float: left; display: block; color: white; text-align: center; padding: 14px 16px; text-decoration: none; }
        .mobile-nav-btn { display: none; background-color: #444; color: white; border: none; padding: 10px; cursor: pointer; }
        .content { background-color: white; padding: 20px; margin-top: 20px; }
        h1, h2, h3 { color: #ff6600; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        footer { background-color: #333; color: white; text-align: center; padding: 10px; margin-top: 20px; }
        .btn { display: inline-block; background-color: #ff6600; color: white; padding: 10px 20px; margin: 10px 0; text-decoration: none; border-radius: 5px; }
        @media screen and (max-width: 768px) {
            nav a { float: none; display: none; }
            .mobile-nav-btn { display: block; }
            .responsive-nav a { float: none; display: block; text-align: left; }
        }