Removes redundant/obsolete WebKit prefixes:
- `-webkit-mask-*` — duplicate the unprefixed `mask-*` siblings already
present; every supported browser handles unprefixed CSS Masking
longhands.
- `-webkit-overflow-scrolling: touch` — a no-op outside iOS Safari <13.
Browser floor (all support unprefixed `mask`): Chrome 120+, Safari
15.4+, Firefox 53+, and PaleMoon/Goanna (verified: unprefixed `mask`
longhands implemented unconditionally in UXP).
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This PR was written with the help of Claude Opus 4.8
Co-authored-by: Claude (Opus 4.8) <noreply@anthropic.com>
Moved fomantic dropdown css to custom module, tested on the dropdown
devtest page, it renders exactly the same as before while using roughly
50% less CSS. The clean up was very conservative, likely more can be
done in the future.
Also, this fixes a bug present on main branch where dropdown border has
incorrect color on hover.
---------
Signed-off-by: silverwind <me@silverwind.io>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
