跳到主要内容

1. Positioning

1.1 static positioning​

  • 默认
  • appbrewery.github.io/css-positioning/

1.2 relative position​

  • relative和他应该在的位置

1.3 Absolute positioning​

  • absolute对于上一个有position relative属性的元素，或者top left corner of the page

1.4 Fixed Positioning​

position relative to top left corner of browser window

2. z-index

  • 默认是0

  • z-index

0%