Andrea Fercia f7f14d94f3 Accessibility: Improvements for the Authentication Check modal dialog "Close X".
Removes the title attribute and uses a `<button>` element instead of a `<div>`.
Also simplifies the CSS and takes care of the hover/focus style.

Fixes #35142.
Built from https://develop.svn.wordpress.org/trunk@36014


git-svn-id: http://core.svn.wordpress.org/trunk@35979 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2015-12-18 23:51:26 +00:00
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2015-11-18 20:28:25 +00:00