body{font-family:Arial;margin:0}header{background:#173d6b;color:#fff;padding:15px}nav a{color:#fff;margin:0 8px;text-decoration:none}.hero{background:#173d6b;color:#fff;padding:80px;text-align:center}.section{padding:30px}.btn{background:#f39c12;color:#fff;padding:10px 15px;text-decoration:none}footer{background:#173d6b;color:#fff;padding:20px;text-align:center}