.warranty-box{max-width:520px;margin:40px auto;padding:20px;border:1px solid #ddd;background:#fafafa}
.warranty-box input{width:100%;padding:10px;margin-bottom:10px}
.warranty-box button{padding:10px 20px;background:#0073aa;color:#fff;border:none}
.warranty-result{margin-top:20px;padding:15px;border:1px solid #ddd;background:#fff}