Colin's 3 Column Preview Challenge

This challenge was a good way for me to review my learning as well as to implement some of the "industry standard" code used. A special mention to @FluffyKas, for taking the time to write a helpful review of my previous challenge, and taught me some tricks on how to centre my content vertically and horizontally.

I do have a question I would like to ask the community, and any responses would be greatly appreciated.

1. Should I be ordering the content of my css file by (html tags>class>id>media query) or (by the order they appear in my html file) or (otherwise?)

Overall, this was a good challenge to recap all I've learned so far. Moving forward, I will try to implement the CSS grid layout, and try to make my CSS code cleaner, as I feel there are multiple elements that have repeated code.