@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);

#browser {
-moz-appearance: none;
background-color:transparent!important;
border-bottom-width:2px;
border-bottom-style:solid;
-moz-border-bottom-colors: rgba(255,255,255,.15) rgba(0,0,0,.1);
}

#main-window[sizemode=normal] #browser {
border-width: 0 2px 2px; 
border-style: solid;
border-bottom-left-radius: 2px;
border-bottom-right-radius:2px;
-moz-border-right-colors:  rgba(255,255,255,.15) rgba(0,0,0,.1);
-moz-border-left-colors:   rgba(255,255,255,.15) rgba(0,0,0,.1);
}

#browser-bottombox,
#browser-bottombox>* {
-moz-appearance: -moz-win-glass!important;
background-color: transparent;
}
#browser-bottombox statusbar {
-moz-appearance: menulist!important;
}