Comment 4 for bug 1700109

On Sat, 24 Jun 2017, Kovid Goyal wrote:

The problem is caused by either calibre or the qt code you're using not
handling
    box-sizing:border-box;
correctly.

If I set margin-right and margin-left to 0 in my stylesheet, and set, as you
recommend, my preferred margin in the viewer prefs, the effect of shifting
viewport and broken display is the same.

When I take box-sizing:border-box; out of my stylesheet, the margins on the
left and right are handled correctly [but then I would have to change a lot
of other things that depend on box-sizing].

The "box-sizing:border-box;" code is, as can be easily googled, perfectly
valid and has been for many years.

Calibre 1.48 incidently doesn't have the problem.

  > Again, dont set margins, you cannot reliably influence the margins via
> css in the calibre viewer. They are designed to be user controllable via
> a setting in the viewer preferences.
>
>

klaus schallhorn