Thoroughly learn CSS-3 in one article

Thoroughly learn CSS-3 in one article

1. Points to note for floating elements

Second, the version of the heart

3. Positioning

1.static: static positioning (default type) (controversial)

2.relative: relative positioning (narcissistic)

3.absolute: absolute positioning (fighting type)

4.fixed: fixed positioning (dead-hearted)

5. Four positioning summary

Fourth, the level of elements (z-index)

Five, vertical-align (vertical alignment)

Six, overflow: overflow

Seven, the hidden difference of elements

8. Nesting relationship in html tags (standard)

Nine, attribute selector and structural pseudo-class selector

1. Attribute selector

2. Structural pseudo-class selector-child series