The theme doesn't show the hamburger icon correctly on some physical devices

[michaellenaghan]

The theme doesn't show the hamburger icon correctly on some physical devices; it looks like this on my phone:

The problem appears to be this line:

nezu/assets/layout/head.css

Line 67 in 99b33bf

width: 40px;

P.S. I thought I had already reported this; apologies if it's a duplicate.