Mobile first with a lot of flexbox and some variables

3 months since the last time I coded. I will pick up studying again in October and was just curious to find out what I still remembered. I started coding last year, but got really busy with work and just couldn't combine studying and working anymore. So I did this as a confidence booster.

I tried implementing the use of variables, but maybe haven't been consistent enough. It's possible I added some margins that didn't need to be there. But this was really just a 'go with the flow'.