Introduction to css styles for html tags to be displayed in the center of the browser

In order to meet certain needs during the layout process, it is a very common practice to center the html tag in the browser. There is a good example below. You can refer to it. css style:

The code is as follows:

<style type="text/css"> 
#login{ 
position:absolute; 
top:50%; 
left:50%; 
margin-left:-标签一半宽度; 
margin-top:-标签一半高度; 
} 
</style>

html part:

The code is as follows:

<p id="login"></p >

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