body{
margin:0;
font-family:system-ui,sans-serif;
background:#f4f4f4;
display:grid;
place-items:center;
height:100vh;
}
.card{
background:#fff;
padding:40px;
border-radius:16px;
box-shadow:0 10px 30px rgba(0,0,0,.12);
max-width:700px;
}
h1{margin-top:0;}