Thickbox: Change only the background-image property for HiDPI screens.

`background` resets `background-size` and makes the spinner fuzzy. Introduced in [35418].

See #33311.
Built from https://develop.svn.wordpress.org/trunk@35648


git-svn-id: http://core.svn.wordpress.org/trunk@35612 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Dominik Schilling
2015-11-16 20:33:25 +00:00
parent a7848ea08b
commit c29fe96196
5 changed files with 5 additions and 5 deletions

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