CSS–SomeStructure_html/css_WEB-ITnose

Some Structure About CSS

Layout Position,Layer[层次] Box Model Visual Formatting Model BFC[block formatting content],IFC[inline formatting content] Style of Format Text Image Link Form Table 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

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