本文介绍了IE11缺少主要元素的用户代理样式（display：block;）的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
显然，IE11没有用于 元素确实不被IE11完全支持。添加 main {display：block; } 到你的CSS是IE9 +的最佳解决方案。因为 display：block; 是 main 元素的默认行为，所以您不需要制作条件注释。不会弄乱任何东西。
Apparantly IE11 doesn't have a User Agent Style for <main> and therefor no display: block; on it. Why is there no User Agent Style? Is this a bug or on purpose?
Adding display: block; to the main element is enough, tho.
解决方案
The main element is indeed not fully supported by IE11. Adding main { display: block; } to your CSS is the best solution for IE9+. You don't need to make conditional comments - since display: block; is the default behavior for main elements, it won't mess up anything.
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