CSS Chrome 下带有滚动条的奇怪 z-index 行为
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Strange z-index behavior with scrollbars under Chrome
提问by Vincent Batoufflet
Using z-index CSS property on 'fixed' positioned elements gives me a strange behavior under Chrome.
在“固定”定位元素上使用 z-index CSS 属性在 Chrome 下给了我一个奇怪的行为。
When Firefox and Opera browsers give me the awaited result, Chrome does not seem to respect the z-index property, displaying the scrollbar above the red overlay (see code and Fiddle bellow).
当 Firefox 和 Opera 浏览器给我期待的结果时，Chrome 似乎不尊重 z-index 属性，在红色覆盖上方显示滚动条（请参阅下面的代码和小提琴）。
HTML:
HTML：
<div class="left">
<div class="placeholder"></div>
</div>
<div class="right"></div>
<div class="overlay"></div>
CSS:
CSS：
.left {
background-color: yellow;
bottom: 0;
left: 0;
overflow: auto;
position: fixed;
top: 0;
width: 35%;
z-index: 10;
}
.right {
background-color: orange;
bottom: 0;
position: fixed;
right: 0;
top: 0;
width: 65%;
z-index: 20;
}
.overlay {
background-color: red;
bottom: 20%;
left: 25%;
position: fixed;
right: 25%;
top: 20%;
z-index: 40;
}
.placeholder {
height: 3000px;
}
Example: http://jsfiddle.net/kvNFW/
示例：http: //jsfiddle.net/kvNFW/
OS: Apple Mac OS 10.8 Google Chrome: Version 27.0.1453.93
操作系统：Apple Mac OS 10.8 Google Chrome：版本 27.0.1453.93
Is there someone having experienced the same issues, or having a way to fix that?
有没有人遇到过同样的问题，或者有办法解决这个问题？
Thanks in advance for any help.
在此先感谢您的帮助。
Edit:
编辑：
See this screenshotfor an overview of the issue.
有关问题的概述，请参阅此屏幕截图。
回答by Hymanysee
You may try to add -webkit-transform: translate3d(0, 0, 0). It solves my similar problem happened in mobile chrome.
您可以尝试添加-webkit-transform: translate3d(0, 0, 0). 它解决了我在移动 chrome 中发生的类似问题。
回答by sinspiral
I had some similar issues, and the only way to resolve I found was to apply some special styles to the webkit scrollbar in order to show it always. See http://jsfiddle.net/sinspiral/pTkQL/with your example fixed.
我遇到了一些类似的问题，我找到的唯一解决方法是对 webkit 滚动条应用一些特殊样式，以便始终显示它。请参阅http://jsfiddle.net/sinspiral/pTkQL/并修复您的示例。
This is not platform compatible (as on windows it will apply those styles too), so you might need to find a way, maybe js, to detect on which OS it is running.
这与平台不兼容（因为在 Windows 上它也会应用这些样式），因此您可能需要找到一种方法，也许是 js，来检测它在哪个操作系统上运行。
.left::-webkit-scrollbar{
-webkit-appearance: none;
}
.left::-webkit-scrollbar-thumb {
background-color: rgba(50, 50, 50, .5);
border: 3px solid transparent;
border-radius: 9px;
background-clip: content-box;
}
.left::-webkit-scrollbar-track {
background-color: rgba(100, 100, 100, .5);
width: 15px;
}
