[html] 第351天 你知道什么是粘性布局吗？

[haizhilin2013]

第351天 你知道什么是粘性布局吗？

我也要出题

[amyhuangxbd]

MDN 是这样解释的：

Sticky positioning can be thought of as a hybrid of relative and fixed positioning. A stickily positioned element is treated as relatively positioned until it crosses a specified threshold, at which point it is treated as fixed until it reaches the boundary of its parent.

中文大概意思：
对象在常态时遵循常规流。它就像是relative和fixed的合体，当在屏幕中时按常规流排版，当卷动到屏幕外时则表现如fixed。该属性的表现是现实中你见到的吸附效果。

[rachelcdev]

an example: https://github.com/wesbos/JavaScript30/tree/master/24%20-%20Sticky%20Nav