Hi Tuanphan,
I have tried all the various code mentioned in this thread on a 7.1 site and haven't met with success either. Attaching an image of the sticky menu - currently appearing with grey background.
I am temporarily going to disable the "fixed" header since it looks bad with the background but the site link is this: https://giraffe-salmon-2jdl.squarespace.com/ pass: FMA
Also, is it possible to have an item (text or image) in the bottom left corner fixed at all times?
Thanks!
-Kerin