@namespace url(http://www.w3.org/1999/xhtml);
@-moz-document url("about:blank") {

body:not(#mail-google-com):not(.editable) {

background: url("http://fc05.deviantart.com/fs28/f/2008/128/5/a/Cat_Fox_Remix_kitty_by_houden.jpg") !important;
/* replace the url with your own */

background-position: right bottom !important;
/* change right to center if you want it  horizontally centered */
/* change bottom to center if you want it vertically centered */

margin: 0px !important;
background-color: white !important;
background-attachment: fixed !important;
background-repeat: no-repeat !important;

}

}

#snap_com_shot_main iframe[src="about:blank"] {
display:none !important;
}
#snap_com_shot_main #snap_com_shot_spasense_iframe {
display:none !important;
}