Theme should't load desktop background on mobile.

Hello, i have a suggestion.
You shouldn’t load background wallpaper on all devices, those images are often 1920 px wide, big in size and not visible on mobile devices any way.
Instead the theme should use a conditional media CSS to load it only when the screen is big enough to actually see it, doing this the image itself won’t even be loaded on a mobile device.


@media only screen and (max-width: 1000px) {
body {
background-image:url("/background.jpg");
background-repeat:no-repeat;
background-attachment:fixed
}
}


Thank you.