html {
    min-height: 100vh;
    margin:0; padding: 0;
}

html {
    font: 18px serif;
}

body {
    max-width: 79ch;
    margin: 0 auto;
    padding: 0 2ch;
    background: #385180;
    color: white;
}

main {
    max-width: 79ch;
    padding: 2ch;
    margin: auto;
    background: #405990;
}

a {
    color: yellow;
}

footer {
    text-align: right;
    padding: 1ch 0;
}

#back {
    float: left;
}

code {
    color: #c0ffee;
}