All solutions

Had a problem with reducing text to fit the device. And also changing the color of the icons on the footer section when hovered or focused became a challenge.

It was a bit hard to implement form validation with JavaScript

Had challenge in adding transition. The elements are not transiting from height 0 to height auto.

Excerpt for the links, I was not sure on which elements to make interactive.

Had a problem with the Google fonts online. I was not able to use font-weight when included from the CDN. But when I downloaded them and included them locally the font-weight property started to work properly.

Am sure this is not a good approach since it will slow down the page's loading speed. So, in the next projects I will try to use the ones from the CDN and figure out why the weights are not working on them.