CSS–Some Structure_html/css_WEB-ITnose

Some Structure About CSS

1. Layout
   1. Position,Layer[层次]
   2. Box Model
   3. Visual Formatting Model
   4. BFC[block formatting content],IFC[inline formatting content]
2. Style of Format
   1. Text
   2. Image
   3. Link
   4. Form
   5. Table
3. CSS Reset

Link for some node of some Structure

1.1 Position,Layer:

CSS z-index 属性的使用方法和层级树的概念

About something that's causing the problem

BFC or other

描述问题： 某个元素包含一个子元素，子元素设置顶部负外边距，父元素随子元素向上偏移