Mobile First Huddle Landing Page

This is my attempt to do the Huddle Landing Page.

I'm still learning, so I hope I get better with every chalange.

What I did: I started with the mobile design. I used the html <header>, <main>, <section> and <footer> tags for the appropriate parts of the page. The CSS contains custom properties (I kind of fell in love with them) and I tried to use mainly rem and em units. The only place I have px is my button's box-shadow.

Please do tell what else do I have to change and/or work on for this and my next challenges.

Thank you for taking the time to look at my code.

Have a great day.