CSS hack for width attribute on IE8 and below [duplicate]

Question

I am trying the following CSS hack for IE8 and below:

 .class {
        background-color: #BFBFBF;
        width: 1154px;
        width: 930px \9;
       }

But this CSS hack is affecting IE9 also.

Could you please help me to apply this width attribute only for IE8 and below?

Answer 1

The other answers are better answers - you should be using conditional comments. But to answer your question as to why what you're doing isn't working, try

width: 930px\9;

Without the space.