Compatibility of websites in IE8 and ff3

Some customers recently asked this question, but the website to be developed does not know the CSS/JS compatibility under IE8 and firefox3.

 

After searching, we can solve the problem as follows:

 

For IE8:

 

During development, you only need to add the following meta on the page to be compatible with IE7 standards:

 

 

< Meta HTTP-equiv = "X-UA-compatible" Content = "Ie = 7"   />

 

I am not familiar with ff3, But it is said that it is quite compatible with the page. Most of the compatibility issues are plug-in issue. However, firefox3 passed

Acid2 browser testing standards, so I want to find the answer to its compatibility issues on the following org website:

 

Http://www.webstandards.org/action/acid2/