CSS

Question

Will I need to memorise everything about CSS or just have an understanding of how to use it.

Answer 1

Hello, Ryan Sullivan (Suvan) !
It is impossible to remember everything. And it is not necessary.
Try to remember the logic.
Understand the difference between a block and a lowercase element.
Disassemble properly in display and position.
Understand how float works
Try yourself to align one div inside the other left / center / right edge.
Align the line element (for example) inside the block element vertically and horizontally to the center / left / right / top / bottom.

If all of the above you do, consider that you already understood the base.
https://www.sololearn.com/Course/CSS/?ref=app