body{font-family:sans-serif;background:#f5f5f5;margin:0}
.wrap{max-width:800px;margin:auto;padding:20px}
.card{background:white;padding:20px;border-radius:12px}
button{display:block;width:100%;margin:10px 0;padding:12px;font-size:16px}
.small{color:#666}