Fix Like Button in Firefox (Overwriting inline styles)

fblike_ff_fix.css

/* Works ONLY for FB-Like button with 'button_count' layout and 'show_faces=false' */
/* Please adapt sizes for different layouts */

.fb_iframe_widget span[style],
.fb_iframe_widget span iframe[style]
 {
    min-height: 25px !important;
    min-width: 100px !important;
}