body{margin:0;font-family:Arial}header{display:flex;justify-content:space-between;padding:15px;background:#fff;position:fixed;width:100%}.logo{height:60px}.hero{height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;background:linear-gradient(#005b9a,#0aa4ff);color:#fff}.btn{background:#00a8ff;color:#fff;padding:12px 24px;text-decoration:none;border-radius:30px}section{padding:80px 20px}