html, body {
    margin: .5rem;
    padding: .5rem;
    font-size: 0.8rem;
    line-height: 150%;
}

html, body, * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html, body {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}
body {
    padding: 2rem;
    background-color: rgb(32, 32, 32);
}
body canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
}