How do I add a 3px line to the top of the page like in the picture?
https://imgur.com/Lkc7RpI
Check this topic https://discuss.flarum.org/d/3502-changing-header-css
vargmal the instruction on that matter did not work for me
The CSS code below worked.
.App-header { border-top: 3px solid #E7742E; }
I thought you will use ::before but you used such an excellent method to realize.
::before
Genius.
