html,
body {
    margin: 0;
    padding: 0;
    background: #000;
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: Arial, sans-serif;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
}

#game {
    width: 100%;
    max-width: 960px;
    height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

canvas {
    display: block;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}