Navbar blocking title in Distill post on small screen

[phber]

As you can see in the screenshot below, my navbar is blocking the title of my distill post.

This only occurs on small screens, you can try it for yourself here.

The strange thing is that the bug doesn't occur when I run my project locally, it only occurs on my published site which makes it difficult for me to figure out why it happens. As far as I can tell, my CSS code for the distill post and navbar is identical to that of the demo (where it looks fine).

Could anyone help me figure out why the title is being blocked?