Learn flexbox!
Although it is IMPOSSIBLE to ever get align-items vs justify-content right on the first try, getting familiar with how flexbox works will allow you to know at least one of them does what you want them to. If there's anything I've learned during my studies it's that development is much more about knowing you can do certain things and being able to google it when you don't know how, rather than having everything memorized. What you need to memorize you will memorize from practice, repetition and experience.
That being said: here are some (two) resources for learning flexbox!
Play Flexbox Froggy
This was such a huuuuuge help for me when learning flexbox. I completed all of the exercises once, and then I would use this as a guide and reference when trying to figure stuff out on my own projects. It's a great interactive way of learning, and it really simplifies and makes flexbox digestible. I recommend just crunching through it once, and you will be exposed to all the different ways of using flex! Then you will have in the back of your head what is possible with flex, and you will be able to recall this and maybe use the next resource to implement it if you don't remember all the keywords yourself!
CSS tricks - a complete guide to flexbox
This was recommended to me by a developer waaay back when i started studying, and it has saved me countless times. It's so good for referencing the different properties, with clear visual examples and a super easy-to-follow structure of the page. I have this bookmarked because of how often I use it.
Good luck in your studies 💻🐸

















