body{font-family:Arial,sans-serif;margin:0;background:#f5f5f5;color:#333}
header{background:#2e7d32;color:#fff;padding:30px;text-align:center}
nav{background:#1b5e20;padding:12px;text-align:center}
nav a{color:#fff;text-decoration:none;margin:0 15px;font-weight:bold}
.container{max-width:1000px;margin:20px auto;background:#fff;padding:25px;border-radius:10px}
.card{border:1px solid #ddd;border-radius:8px;padding:15px;margin:10px 0}
.btn{background:#25D366;color:white;padding:12px 18px;text-decoration:none;border-radius:6px;display:inline-block}
footer{background:#1b5e20;color:white;text-align:center;padding:15px;margin-top:20px}