Div Css(3)_html/css_WEB-ITnose

Today I watched the third video tutorial of Div css.
I don’t feel very good. I found that this video is just a web page frame. There is nothing bad about this. What makes people feel a little bad is that the lecturer only uses IE alone to test the explanation.
I personally enlarged the Demo to IETester for testing, put it in FF4, put it in Opera, and put it in Chrome and found that the effect will not be deformed only under IE core. disappointment. . .
The compatibility is poor. . . Please improve this framework when you have time! hehe. . .
Not much to say.

Rendering:

The code is as follows:

 

  

  

 

 

 

nav

 
 

  

 

  

  

nav_left

  

  

 

 

 

 
 

nav

 

  

  

  

 
  

 

  

  

  

nav_left

 

 

 
 

nav