这个问题会出现在所有浏览器当中,原因是css2.1盒子模型中规定, In this specification, the expression collapsing margins means that adjoining margins (no non-empty content, padding or border areas or clearance separate them) of two or more boxes (which may be next to one another
---恢复内容开始--- 之前在写项目的时候,发现原本想让父子元素之间加点边距,却让父元素产生了margin-top,于是百度之后发现了原因. 在css2.1盒模型中 In this specification, the expression collapsing margins means that adjoining margins (no non-empty content, padding or border areas or clearance separate them) of tw
1.原因: In this specification, the expression collapsing margins means that adjoining margins (no non-empty content, padding or border areas or clearance separate them) of two or more boxes (which may be next to one another or nested) combine to form