body{font-family:Arial;margin:0}header{background:#0d6efd;color:#fff;padding:20px;text-align:center}
nav{background:#083b8a;padding:10px;text-align:center}nav a{color:#fff;margin:0 10px;text-decoration:none}
.hero{padding:80px;text-align:center;background:#eef5ff}.btn{background:#0d6efd;color:#fff;padding:12px 20px;text-decoration:none;border-radius:6px}
.card{display:inline-block;margin:10px;padding:20px;border:1px solid #ddd;border-radius:8px}footer{text-align:center;padding:20px}