COLMAR ACADEMY CAPSTONE PROJECT mobile screen not fitting the screen

I’ve just finished my website from scratch and looks nice in a desktop but it doesn’t fit the screen in a mobile phone.
I toggled to small device view in devtools but still can’t find the bug.

Here is the web on github pages:

Here’s the code in a gist:
capstone colmar

Does anybody have a clue what’s wrong?

Perhaps the font size is too big.


Thanks mate, I’ll be fixing that and updating the website. It isthe same thing my brother told me, and he is an experienced programmer but he don’t have a clue of HTML either CSS…
But the problem seems to be somewhere else…
Anybody find the problem? I just can’t…