Mobile First Space Tourism Challenge Solution using CSS Flexbox

Hi community, I hope you will find my solution useful.

I've had a hard time doing the horizontal bar on the large screens' header (From 1440px). It is supposed to reach the beginning of the main text starting from the header but I did a small bar instead. Any tip on how to do it ?

Also, as I am using no components (from frameworks), I had to copy and paste the header and footer in every HTML files. Do you know any tool that can make this easier while coding with just HTML & CSS?

Thanks in advance !