两个要点
1. z-index为任意值,包括负值,可实现与isolation: isolate;一样效果,生产独立的层级上下文
2. 绝对定位的元素scaleX宽度变化,扩大从中间向两侧扩大,缩小从两侧向中间缩小
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>两侧向中间高亮效果</title> <style> li{ position: relative; margin-top: 10px; background: lightblue; /* isolation: isolate; */ z-index: 1; } li:before{ content: ""; position: absolute; z-index: -1; top: 0; right: 0; bottom: 0; left: 0; background: #fff; transition: .3s ease-out; } li:hover{ cursor: pointer; } li:hover:before{ transform: scaleX(0); } </style> </head> <body> <ul> <li>Coffee</li> <li>Tea</li> <li>Milk</li> </ul> </body> </html>
可参考此文的右侧导航的高亮效果 JavaScript 如何将一个迭代器转化为一个数组
标签:index,高亮,效果,两侧,闭合,li,中间 From: https://www.cnblogs.com/mengff/p/17887116.html