I also have a similar question on this topic..
I created a custom css background color to a line block (it is its own page within the index). I want it to operate as section dividers on my site pages. it works perfectly on desktop and even iPad views (see below)
however, when I open these pages on iPhone/mobile view.. it get a much fatter/taller line height than desired.. any pointers how to fix this?
thank you in advance for the help here!
Jess