It is good. Not perfect, but usable. Anyhow, web development has a problem with high screen displays. On the one hand, the px unit in CSS is not a real pixel, so it can be scaled with respect to screen pixel density without breaking the spec. On the other hand, images are really measured in screen pixels.
The end result is that layouts break at densities other than 96dpi, where one CSS px is one screen pixel. The solution would be for image files to embed the display density, but from what I gather, browsers discard that information.
As I posted in the other comment, the major problem now is that the browser UI is not drawn at the correct density and ends thus tiny on high dpi displays.
Anyhow, as these displays become pervasive, it must get fixed.
The end result is that layouts break at densities other than 96dpi, where one CSS px is one screen pixel. The solution would be for image files to embed the display density, but from what I gather, browsers discard that information.
As I posted in the other comment, the major problem now is that the browser UI is not drawn at the correct density and ends thus tiny on high dpi displays.
Anyhow, as these displays become pervasive, it must get fixed.