Font sizes in hamburger menu are changed on published site, even though they are correct in the Designer

Hi,

I have checked the font sizes on all screen sizes in the designer and they are all correct, but when published, the website shows a few of the links in the hamburger menu bigger than others.

I have created this Loom video to make my issue more clear:
https://www.loom.com/share/c41056c4e37b422b90967d070b701363

What is going wrong here? I have checked everything a 100 times but I can’t find what’s causing this issue..

Here is my site Read-Only:

It would be helpful if you could share a published URL to the page, so inspection in a browser is possible.