Text goes missing on 4-5'' devices

Hi, Jerry. Nice work you’ve done on this theme.

Started to build a website and have experienced problem on 4-5 inch mobile devices as text goes missing while viewing in portrait mode (normal handle of phone).

Mine site can’t be accessed at the moment, but the situation can be seen on any phone or emulator, as example taking previously mentioned site here

It would be nice if you’ll look into this bug. Thanks in advance!

p.s. tested also on 3.8inch device – no problem on that.