Now I want to make the div float on top of the iframe, but I have tried many things but it doesn't work. Can I ask an expert how to solve this problem? Thanks! _html/css_WEB-ITnose

Now I want to make the div float on top of the iframe, but I have tried many things but it doesn’t work. Can I ask an expert how to solve this problem? Thanks!

Reply to discussion (solution)

Setting z-index also doesn’t work?

The history record is a DIV floating layer with z-index: 100000.

I don’t know what the problem is just by looking at the pictures. . You try the methods mentioned here. .
http://blog.sina.com.cn/s/blog_5a3ab49d0100tvm9.html

z-index is only effective with positioning
Do you have positioning?