关于 CSS3 backface-visiable 与 overflow 属性的冲突_html/css_WEB-ITnose

最近在做一个 flip 效果的时候发现一个奇怪的问题，设置了 backface-visiable：hidden；overflow：hidden 的元素反转180度以后背面没有被隐藏，最终还是被Google出来了，overflow会覆盖transform-style: preserve-3d属性，还有以下一些元素会导致transform-style: preserve-3d失效：

参考地址： http://codepen.io/thebabydino/details/rACbl

Don't set overflow: hidden on elements with 3D transformed children

By  Ana Tudor

DESCRIPTION

the 'back' face of the card has a rotatey(180deg) set on it. both faces have backface-visibility: hidden set. setting overflow: hidden on their parent (the card) causes the 3d transformed face ('back' face) to disappear and backface-visibility: hidden to be ignored for the other.

From the spec (link):

The following CSS property values require the user agent to create a flattened representation of the descendant elements before they can be applied, and therefore override the behavior of transform-style: preserve-3d:

clip-path: any value other than none.

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The computed value of transform-style is not affected.