CSS Style design basics

First, well-designed web page structure

　　

Second, the first knowledge of CSS

　　

Third, selector

1. Tag Selector El

2. ID selector #id

3, class selector. classname

4. Special Selector

• • Child Selector
    • div > Span child elements
  • Include selector
• • Div span descendant elements
  • Adjacent selectors:
    • div + span neighbor and matching sibling
  • Group Selector
    • Div, span
  • Specifying selectors
    • No spaces between Div#id objects
  • Universal Selector
    • *{}
  • Property Selector
  • Pseudo Selector

Iv. Basic Features

　　

Five, style sheet definition

　　

Vi. attributes and attribute values

• Common Properties

　　　　

• Abbreviation:

　　　　　　

• Units and colors:

　　　　

CSS Style design basics