how can I remove or lessen left margin

[parmentelat]

Hey there

I have used to produce this page:
https://ue22-p24.github.io/backend-flask-chatapp/scrollycoding
which is working great

As a further improvement I would like to remove the left margin that is eating up a lot of the available real estate
I am not fluent in tailwind but I tried to understand what was causing this wasted land, to no avail though

sources can be read here
https://github.com/ue22-p24/backend-flask-chatapp

I would be grateful about any hint or insight that could help reduce the left margin in this page

thanks !