Fix "contains" CSS for Chromium <57 (#3317)
Fix "contains" CSS for Chromium <57 (#3317)

Fixes #3277. I've tested in QupZilla on Mac and can confirm it fixes the issue, and that Chrome 58 is not affected (because it has Grid).
kibousoft/mastodon,kibousoft/mastodon,kibousoft/mastodon,kibousoft/mastodon