This is a good default, and also works around a couple
of current bugs in the Qt implementation. (Applications
can change the default values in the .html file as
needed.)
Change body height to 100% of the visual viewport (“100vh”)
to make the html body cover 100% of the viewport after
landscape -> portrait transitions on iOS.
Pick-to: 5.15
Task-number: QTBUG-85536
Task-number: QTBUG-85662
Change-Id: Iced1aee03940361c96f1fe3c104f3e6eb983cb90
Reviewed-by: Lorn Potter <lorn.potter@gmail.com>