CSS3 Selector--Guide diagram

CSS3 selectors include: basic selector, hierarchy selector, pseudo-class selector, pseudo-element selector, property selector

Basic Selector

Hierarchy Selector

Pseudo-class selectors are divided into dynamic pseudo-class selectors, target pseudo-class selectors, language pseudo-class selectors, UI element State pseudo-class selectors, structure pseudo-class selectors, negation pseudo-class selectors

Pseudo element Selector

Property Selector

CSS3 Selector--Guide diagram