Without setting font and line-height, these reftests may yield different
results on different platforms because of the default font are
different. Also, their optimal column balancing height may not be an
integer in CSS pixels.
I discover this because they are failing due to 1px column height
difference after we stop searching optimal balancing height within a
certain threshold on either macOS, Windows, or Android.
Differential Revision: https://phabricator.services.mozilla.com/D83730
In the next part, the patch generated by a script removes "-moz" prefix
to all multi-column properties.
However, some of the tests already have standard multi-column properties
specified. To avoid duplicating CSS multi-column rules in these
files (after applying the next part), I manually remove the prefixed
rules beforehand as many as possible.
Differential Revision: https://phabricator.services.mozilla.com/D44869
--HG--
extra : moz-landing-system : lando
Ting-Yu Lin
Mats Palmgren