"CSS authoritative guide (third Edition)"---chapter II selector

The main content of this chapter is how to get the elements in the document given to render:

1. Element selector;

2.ID selector;

3.CLSSS selector;

4. Wildcard selector: *;

5. Property selector: selector[]

6. Partial Property selector: selector[~= "Warning"] [doo^= "Bar"] [doo$= "Bar"] [boo*= "bar]

7. Specific attribute selector: *[lang |= "en"]

8. Descendant Selector

9. Group Selector

10. Adjacent selector: H1 + P {}

11. Direct sub-selector: h1 > P

12. Pseudo-class and pseudo-elements:

Pseudo-class: Link:visited:hover:active:focus First-child

Pseudo element:: First-letter first-line:before:after

　　　Note: First-letter and first-line can only be applied to block elements such as paragraph marks and cannot be applied to inline elements.

Summary: Some of the front-end engineers ' ideas can be accomplished through selectors, so be aware of these selectors accurately.

"CSS authoritative guide (third Edition)"---chapter II selector