As you may or may not know CSS3 added two very powerful CSS layout methods called Grid and Flexbox. If you’ve used either of these or both before you’ll likely know there are many of properties that guide each. These can be hard to remember so people have created cheatsheets to help quickly remember or find the property and syntax you’re looking for. My favorites and goto sheets are from Malven Co. They are very comprehensive and show small examples for what every property does so you can easily find what you’re looking for. The one for Grid is here and the one for Flexbox is here.