The types of css selectors are: 1. Element selector; 2. ID selector; 3. Class selector; 4. Group selector (union selector); 5. Composite selector (intersection Selector); 6. Wildcard selector; 7. Descendant element selector; 8. Child element selection; 9. Pseudo-class selector; 10. Attribute selector; 11. Sibling element selector.
The operating environment of this tutorial: Windows 7 system, CSS3 version, Dell G3 computer.
1. Element selectorTag name{}
2. id selector#id attribute value { }
##3. Class selector·class attribute value { }
4. Group selector (union selector)
Function: It can select multiple items at the same time Elements corresponding to selectors (usually used for collective declaration) Syntax:
选择器1，选择器2，选择器n{ }
5. Compound selector (intersection selector)
Function: Select a more accurate and detailed target element and set attributes for it Syntax:选择器1选择器2选择器n{ }