body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #f2f2f2; color: #333; } header, footer { background: #1e88e5; color: white; padding: 20px; text-align: center; } nav a { color: white; margin: 0 15px; text-decoration: none; } .container { padding: 20px; max-width: 900px; margin: auto; background: white; box-shadow: 0 0 10px rgba(0,0,0,0.1); } h1 { color: #1e88e5; } .download-button { display: inline-block; margin-top: 20px; padding: 15px 30px; background: #43a047; color: white; font-size: 18px; border-radius: 5px; text-decoration: none; } .footer-links a { color: #fff; margin: 0 10px; }