html {
    background-color: black;
    font-size: clamp(100%, 2vw, 150%);
    margin: auto;
}

body { margin: 0 }

a {
    color: white;
    text-decoration: none;
}

footer {
    color: white;
    margin: auto;
    padding: 1ex;
    text-align: center;
}
footer a { text-decoration: underline }