.step{display:none}.step.active{display:block}
.campo{margin-bottom:15px}
label{font-weight:bold}
input,select,textarea{width:100%;padding:8px;border:1px solid #ccc;border-radius:6px}
button{background:#0073aa;color:#fff;padding:10px;border:none;border-radius:6px}
.card{background:#fff;padding:20px;border:1px solid #ddd;border-radius:10px}