*{box-sizing:border-box;font-family:Helvetica Neue,sans-serif}body{color:#000;background-color:#fff;justify-content:center;align-items:center;min-height:100vh;margin:0;display:flex}.container{text-align:center;width:100%;max-width:420px;padding:24px}.link{color:#000;border:2px solid #000;border-radius:8px;width:100%;margin-bottom:14px;padding:14px;font-weight:700;text-decoration:none;transition:background .2s,color .2s;display:block}.link:hover{color:#fff;background-color:#000}