Displays two parts of data,
The upper part does not move with the scroll bar, that is, it is always displayed
The lower part is normal
http://www.cnblogs.com/cracker/archive /2011/07/04/css_fixed.html
I don’t understand this article. Please give me some advice
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
