DFW: fix buttons and the title width, make the fade out/in when opening and...

DFW: fix buttons and the title width, make the fade out/in when opening and closing a bit faster. See #24067.
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git-svn-id: https://core.svn.wordpress.org/trunk@26779 1a063a9b-81f0-0310-95a4-ce76da25c4cd