/* Don't load image that user won't see */
@media screen and (min-width: 800px) and (max-width:1000px) {
    body {
        background-image: url("Images/Donuts1x.png"), url("Images/BlueNoise.png");
    }
}

@media screen and (min-width: 1000px) {
    body {
        background-image: url("Images/Donuts2x.png"), url("Images/BlueNoise.png");
    }
}