:root{font:16px system-ui;color:#17202a;background:#f5f7fa}main{max-width:620px;margin:8vh auto;background:white;padding:2rem;border-radius:10px;box-shadow:0 2px 15px #ccd}label{display:block;margin:1rem 0}input{display:block;width:100%;box-sizing:border-box;padding:.7rem;margin-top:.3rem;border:1px solid #bbc;border-radius:5px}button{padding:.7rem 1rem;background:#175cd3;color:white;border:0;border-radius:5px;cursor:pointer}code{background:#eef;padding:.15rem}