html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-around;
}

canvas {
    display: block;
}

body, button, select {
    font-family: Arial;
    font-size: 1.2em;
    padding: 1em;
}

#status {
    display: block;
    min-height: 1.2em;
}