Quote Originally Posted by responsivezc View Post
Try the following instead:

Code:
/* firefox */
@-moz-document url-prefix() {
    #navMainSearch {
        margin-left:-6px;
        margin-top:-3px;
    }
}

/* chrome */
@media screen and (-webkit-min-device-pixel-ratio:0) { 
    #navMainSearch {
        margin-left:-6px;
    }
}
I took a look at your site and there is not an element with the search-header-button class
so I assume that you want to change the element with the navMainSearch id
It moved the entire search box. I left it that way to show you. I arrived at the numbers by entering different ones in firebug and these numbers aligned the submit button with the search box. If I leave it alone, in these two browsers the submit button is misaligned with the search box and looks amateurish.