html, body {
    margin: 0;
    padding: 0;
}

canvas {
    border: 0.75rem solid #ffffff;
    box-shadow: 1px 1px 10px rgba(0, 0, 0, 0.1),
    -2px 12px 10px rgba(0, 0, 0, 0.1);
    display: block;
    padding-left: 0;
    padding-right: 0;
    margin-left: auto;
    margin-right: auto;
}