“覆盖"功能是什么? “溢出"的值财产? [英] What is the function of "overlay" value of "overflow" property?

问题描述

我无法理解重叠式广告"和"汽车". 重叠广告"与自动"广告有相同的作用吗?

I am unable to understand the difference between "overlay" & "auto". Does "overlay" does the same work as "auto"?

推荐答案

唯一的区别是overflow: overlay仅受-Webkit浏览器支持，是非标准化的，并且允许内容扩展到滚动条下方-而overflow: auto不允许内容在滚动条下方扩展，如果看起来它将占据所需的空间并相应地(垂直或水平)移动内容.

The only difference is that overflow: overlay is only supported by -Webkit browsers, is non-standardized, and allows the content to extend beneath the scrollbar - whereas overflow: auto will not allow the content to extend beneath the scrollbar, if it appears it'll occupy the space required and shift the content accordingly (either vertically or horizontally).

p {
    display: inline-block;
    width: 12em;
    height: 5em;
    border: dotted;
}

p.overflow-auto { overflow: auto; /* append scrollbars if necessary and shift content accordingly to accommodate */ }

p.overflow-overlay { overflow: overlay; /* append scrollbars if necessary and overlay over/above content */ }

<p class="overflow-auto">overflow: auto
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium.</p>

<p class="overflow-overlay">overflow: overlay
Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium.</p>

上面的代码片段演示了以下差异:

The above snippet demonstrates the difference as follows:

p.overflow-auto { overflow: auto; /* append scrollbars if necessary and shift content accordingly to accommodate */ }

p.overflow-overlay { overflow: overlay; /* append scrollbars if necessary and overlay over/above content */ }

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