[wp-trac] [WordPress Trac] #35717: Audit the .icon16 selectors in admin-menu.css

[WordPress Trac]

#35717: Audit the .icon16 selectors in admin-menu.css
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 Reporter:  afercia         |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Administration  |    Version:
 Severity:  normal          |   Keywords:  needs-patch dev-feedback
  Focuses:  ui              |
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 Noticed while investigating the admin stylesheets for
 [https://core.trac.wordpress.org/query?keywords=~color-contrast color
 contrast], looks like the `.icon16` selectors in `admin-menu.css` are no
 more used. I'm not 100% sure and I'd really appreciate some feedback
 though.

 As far as I see, the `.icon16` selectors were used only for the Welcome
 Panel at some point, while the admin menu always used its own selectors.
 It seems to me they can be safely removed.

 Some history:
 Introduced in WordPress 3.3 to reuse the admin menu icons on the Welcome
 Screen, see [19163] and [19197].

 The icons were then removed with the Welcome Panel redesign for WP 3.5,
 see [22018] and #21368.

 The selectors were still present in the MP6 stylesheets, see [26072], but
 no more used in any screen? If so, it would be a nice opportunity to do
 some cleaning.

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Ticket URL: <https://core.trac.wordpress.org/ticket/35717>
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