[wp-trac] [WordPress Trac] #41286: Focus style and High Contrast Mode

[WordPress Trac]

#41286: Focus style and High Contrast Mode
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 Reporter:  afercia                      |       Owner:
     Type:  defect (bug)                 |      Status:  new
 Priority:  normal                       |   Milestone:  Future Release
Component:  Administration               |     Version:
 Severity:  normal                       |  Resolution:
 Keywords:  has-screenshots ui-feedback  |     Focuses:  ui, accessibility
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Comment (by afercia):

 Discussed during today's weekly a11y bug-scrub, reporting here some
 thoughts emerged during the discussion, for reference:
 - maybe use '-ms-high-contrast' as CSS hack to target Windows High
 Contrast Mode? Seems as of Microsoft Edge, -ms-high-contrast: none is no
 longer supported
 - Hans Hillen wrote a JS library for detecting high contrast mode; we
 could experiment with that:
 http://hanshillen.github.io/HCMDS/hcmode_detection.html
 - use system color keywords? They were experimented a bit in Gutenberg
 with not so great results, as they vary across OSes
 - the only proper way would be using outline/border for focus styles, it
 feels like that’s the _right_ way, tough change to make, though
 - worth noting some focus style refactoring has been discussed for quite a
 long time

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Ticket URL: <https://core.trac.wordpress.org/ticket/41286#comment:13>
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