style.css

body {
    margin: 0;
}

canvas {
    position: absolute;
    image-rendering: -moz-crisp-edges; /* Firefox */
    image-rendering: -webkit-crisp-edges; /* Webkit (Safari) */
    image-rendering: pixelated; /* Chrome */
}

#background {
    background-image: url(src/resources/gui/title/splash.png);
    background-repeat: no-repeat;
    background-size: contain;
    background-position: center;
    image-rendering: -moz-crisp-edges; /* Firefox */
    image-rendering: -webkit-crisp-edges; /* Webkit (Safari) */
    image-rendering: pixelated; /* Chrome */
}

.fullscreen {
    position: absolute;
    float: left;
    display: block;
    width: 100%;
    height: 100%;
    white-space: nowrap;
    overflow: hidden;
}