Thanks so far, to create a custom variable should be no problem. But I think something is missing to create the PixelRatio-test. First I need someting like:
var (window.devicePixelRatio >= 1.5) "high" : "normal";
Or maybe I'm simply wrong? ;-)
var (window.devicePixelRatio >= 1.5) "high" : "normal";
Or maybe I'm simply wrong? ;-)