/* main css */

body {
    margin: 0;
    display: flex;
    width: 100vw;
    height: 100vh;
    box-sizing: border-box;
    font-family: sans-serif;
    font-size: medium;
}

/* main with canvases */

main {
    flex: 1;
    box-sizing: border-box;
    display: flex;
    position: relative;
}

main canvas {
    position: absolute;
    box-sizing: border-box;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* footer */

footer {
    position: fixed;
    z-index: 1;
    left: 0;
    bottom: 0;
    width: 100%;
    display: flex;
    background-color: silver;
    font-family: monospace;
    font-size: medium;
}
footer > div:nth-child(2n) {
    margin-right: 1ex;
    font-weight: bold;
}