body{font-family:Arial,sans-serif;margin:0;background:#f4f4f4}
header{background:#003366;color:#fff;padding:20px;text-align:center}
nav{background:#005599;padding:10px;text-align:center}
nav a{color:#fff;text-decoration:none;margin:0 12px}
section{background:#fff;margin:20px;padding:20px;border-radius:8px}
input,textarea{width:100%;max-width:500px;padding:8px}
button{padding:10px 18px}
footer{text-align:center;padding:15px;background:#003366;color:#fff}