这次介绍一下一个水平垂直居中的css方法,这个方法可以说是百试百灵,废话不多说,直接附上代码:
html,body{
width:100%;
height:100%;
}
你需要居中的元素{
position: fixed;(absolute)
left:50%;
top:50%;
-webkit-transform: translate(-50%,-50%);
}
他的父元素{
position: relative;
width:100%;
height:100%;
}
当然,你的父元素是需要一个高度的,不管是根据html和body的height:100%;还是具体的高度,这样子,你的元素不管怎么样都可以居中。根本不用去考虑margin或者padding或者float之类的属性,是不是很神奇!

The official account web page update cache, this thing is simple and simple, and it is complicated enough to drink a pot of it. You worked hard to update the official account article, but the user still opened the old version. Who can bear the taste? In this article, let’s take a look at the twists and turns behind this and how to solve this problem gracefully. After reading it, you can easily deal with various caching problems, allowing your users to always experience the freshest content. Let’s talk about the basics first. To put it bluntly, in order to improve access speed, the browser or server stores some static resources (such as pictures, CSS, JS) or page content. Next time you access it, you can directly retrieve it from the cache without having to download it again, and it is naturally fast. But this thing is also a double-edged sword. The new version is online,

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