[wp-trac] [WordPress Trac] #29012: Media modal close icon should be consistent with other modals

[WordPress Trac]

#29012: Media modal close icon should be consistent with other modals
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 Reporter:  celloexpressions  |      Owner:
     Type:  defect (bug)      |     Status:  new
 Priority:  normal            |  Milestone:  4.0
Component:  Media             |    Version:
 Severity:  normal            |   Keywords:  has-patch
  Focuses:  ui                |
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 Many of our newer modals use close and arrow icons with borders and a bold
 background color on focus. Currently, this includes the theme browser,
 Customizer, media grid details, and probably others.

 The media modal should have a similarly-styled close button, probably
 without the borders. Now that the close button is auto-focused, it needs a
 more beautiful styling that is consistent with other auto-focused icons
 (like the Customizer close icon). Otherwise it looks like a bug (#28969).

 Patch also cleans up media grid overrides of the modal styling to make it
 look like the newer-style close icons.

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Ticket URL: <https://core.trac.wordpress.org/ticket/29012>
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