Do CSS pseudo classes get read before other selectors? -

Do CSS pseudo classes get read before other selectors? -

css reads right left, pseudo classes read before or after selectors attached to?

for example, in:

p:first-child {}

do browsers match every p-element, , determine whether it's first-child, or match every first kid of every element, , determine whether it's p-element?

i imagine browsers match element, , determines whether it's :first-child, :nth-child, etc., sure..

"do browsers match every p-element, , determine whether it's first-child, or match every first kid of every element, , determine whether it's p-element?"

neither. browser doesn't elements apply rules to, looks rules apply element.

when checking if rules applies element, doesn't create much difference if first checks whether p element or whether it's first child. both quite easy determine.

css css-selectors