As online resources go, this is by far one of the best. It has everything laid out nice & neat with helpful syntax tips along the way.
You’ll find everything from common selectors to pseudo-selectors, along with shortened versions of the most popular CSS methods for styling fonts & elements on the page.
It can be tough to remember which value of background-position comes first(it’s the top px value, by the way).
Adam was even nice enough to create a full GitHub repo for this project by open sourcing the whole website. This way CSS developers can contribute their own ideas to the project and improve upon an already incredible CSS cheat sheet.
So if you tend to struggle with memorizing these commands you might consider bookmarking Adam’s resource for future web projects.