March 21, 2015 at 00:01 UTC - Views: 3 #20656
I added the first bolded rule, and after a few months of delay to post a question, the mobile header image resize also on browser resize. Not resizing occurs only on Firefox and SeaMonkey.
But it displays fine anyway on mobile test sites.
Thx for this rule 😉 Maybe it should be added to help page.