JQury slideToggle flashing problem and solution

When using slideToggle, we often encounter the problem of flickering when the list is closed. Generally, IE browser will have this problem, and other browsers such as Firefox will not flicker.

1. Solution
Configure 7758f75eaa8b2856d574fece07da8ebf on the page as follows
98b4a04187af3f8d9c2852e86995f9a5
where "http://www.w3.org/TR/html4/loose.dtd" is required, if missing This sentence still has the problem of flickering. I'm not sure why.
I checked it and it seems that this sentence involves regulations. If anyone sees this post and knows the reason, please leave a message, thank you
2. Example
[The following is an example]

The code is as follows:

 
 
 
 
 
 
 
 
基础数据
 
 
员工管理
 
角色管理
 

权限管理
 
 
新闻管理
 
 
查询新闻
 
添加新闻
 
 
 

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