CSS Hack for Google Chrome

[Alexancho]

I need a one div to be in Chrome only, so i used a code:

div.chrome_hack{
display:none;
}
@media screen and (-webkit-min-device-pixel-ratio:0)
{
div.chrome_hack{
display:block;
}
}
It works, but causes a validation error:

110 Property -webkit-min-device-pixel-ratio doesn't exist for media screen : 0 0

Is there a better solution?
And if there isn't can we say this solution is correct?