<style type="text/css">
@media screen and (-webkit-min-device-pixel-ratio:0) {
    H5 { color:red; }
    P { margin-left:20px; }
    /* other special styles for Chrome here */
}
</style>

http://www.apphp.com/index.php?snippet=css-targeting-chrome-only

This solution is based on Chrome specific CSS extension. Other browsers will ignore this rule.

Targeting Chrome With CSS

css

CSS