and those who prevent history from being taught, want to lift themselves up at the expense of others

I would advise against using pixels for margin/padding since it’ll have issues for users who have different zoom/text sizes than you do.

Stick to rem for margin and padding.

If you’re still early days with css, it’s worth pointing out that you should use a “css reset” file. It will solve problems for you that you don’t even know exist yet.