:root {
    font-family: monospace;
    color: white;
    background: black;
}

html, body {
    margin: 0;
    width: 100%;
    min-height: 100vh;
    box-sizing: border-box;
}

body {
    padding: 15px;
}

a {
    color: yellow;
}

hr {
    border: none;
    height: 2em;
}