To add Mozilla specific CSS, just include the CSS inside @-moz-document url-prefix() as shown below:
/* Mozilla Specific CSS */
 @-moz-document url-prefix()  {
    #imgHeaderTD
    {
        display:none;
    }
}
The above code hides the element with ID imgHeaderTD in Mozilla only.
To add Chrome specific CSS, just include the CSS inside @media screen and (-webkit-min-device-pixel-ratio:0):
To add Chrome specific CSS, just include the CSS inside @media screen and (-webkit-min-device-pixel-ratio:0):
/* Chrome Specific CSS */
@media screen and (-webkit-min-device-pixel-ratio:0) {
    #imgHeaderTD
    {
    display:none;
    }
}
 
 

