I validated my website using validator.w3.org
It reported the following error:
Line 5, Column 67: Bad value X-UA-Compatible for attribute http-equiv on element meta.
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" >
If I don't include that META tag, than all IE9 visitors will see my website in Quirks mode, and I want to prevent that.
Any help would be greatly appreciated!
You could always put the X-UA-Compatible setting into the actual HTTP headers instead. How you do that depends on the web server you are using, and what, if any, server-side framework you are using.