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这是我的代码:不生效?
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我用的标题2,一个在中心偏移,但它不会跳过一些空间,不像在文档?我想要做的是在它们上添加一些边距,但是当我尝试时,它会将底部的最后一个压入底部,或者如果我不使用4,它不占用所有空间。我如何在这里添加保证金?