This change replaces `display: none` with `screen-reader-text` styles so the text labels are available for screen readers on small screens. Props legendusmaximus, sabernhardt, konradyoast. Fixes #54895. Built from https://develop.svn.wordpress.org/trunk@52674 git-svn-id: http://core.svn.wordpress.org/trunk@52263 1a063a9b-81f0-0310-95a4-ce76da25c4cd