body{font-family:Arial;background:#f2f4f8;text-align:center}
.card{background:#fff;padding:20px;margin:40px auto;width:90%;max-width:360px;border-radius:8px}
input,button{width:100%;padding:10px;margin:8px 0}
button{background:#0066ff;color:#fff;border:none;border-radius:6px}