body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        header { display: flex; justify-content: space-between; align-items: center; background: #4CAF50; color: white; padding: 15px; }
        .logo { font-size: 24px; font-weight: bold; }
        nav ul { display: flex; list-style: none; gap: 20px; }
        nav a { color: white; text-decoration: none; }
        .mobile-menu { display: none; }
        h1 { color: #2E7D32; margin-top: 30px; }
        h2 { color: #43A047; margin-top: 25px; }
        h3 { color: #66BB6A; margin-top: 20px; }
        .btn { display: inline-block; background: #FF9800; color: white; padding: 10px 20px; margin: 10px 0; border-radius: 5px; text-decoration: none; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        footer { background: #333; color: white; padding: 20px; text-align: center; margin-top: 30px; }
        @media (max-width: 768px) {
            nav ul { display: none; }
            .mobile-menu { display: block; }
            .show-menu { display: flex; }
        }