html {
    font-family: 'VT323', monospace;
    text-align: center;
    height: 100%;
    box-sizing: border-box;
}

body {
    height: 100%;
    display: flex;
    flex-direction: column;
    margin: 0;
    padding: 0;
}

main {
    display: inline-flex;
    flex-direction: column;
    flex-grow: 1;
}

footer {
    text-align: right;
    flex-shrink: 0;
}