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body{background:#fff;font-family:sans-serif;display:flex;justify-content:center;align-items:center;height:100vh;margin:0}.container{width:100%;max-width:300px;padding:20px}h2{text-align:center;font-weight:300}.group{margin-bottom:20px}label{display:block;font-size:10px;color:#666;text-transform:uppercase}input{width:100%;border:none;border-bottom:1px solid #000;padding:10px 0;outline:none;font-size:16px}button{width:100%;background:#000;color:#fff;border:none;padding:12px;margin-top:30px;cursor:pointer}.error{color:red;font-size:12px;text-align:center}