userChrome.css

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

#appmenu-toolbar-button{
    display: none !important;
}

.tabbrowser-tab[fadein]:not([pinned]){
    min-width: 0px !important;
    max-width: 2000px !important;
}

#urlbar .autocomplete-history-dropmarker{
    display: none !important;
}

#BMB_viewBookmarksToolbar, #BMB_viewBookmarksToolbar+menuseparator,
#BMB_bookmarksShowAll, #BMB_bookmarksShowAll+menuseparator,
#BMB_bookmarkThisPage,
#BMB_subscribeToPageMenuitem,
#BMB_subscribeToPageMenupopup, #BMB_subscribeToPageMenupopup+menuseparator,
#BMB_bookmarksToolbar, #BMB_bookmarksToolbar+menuseparator,
#BMB_bookmarksPopup menuseparator[builder="end"],
#BMB_unsortedBookmarks{
    display:none !important;
}

#tabbrowser-tabs {
    background: #080808 !important;
    border: none !important;
    padding-left: 0px !important;
    padding-right: 0px !important;
    padding-bottom: 0px !important;
    border-bottom: 0px solid #bdbdbd !important;
}

.tabbrowser-tab {
    border: 0px solid #808080 !important;
    border-left: 1px solid #808080 !important;
    border-right: 1px solid #808080 !important;
    border-radius: 0px !important;
    padding-left: 0px !important;
    padding-right: 0px !important;
    background: #080808 !important;
    margin-bottom: 0px !important;
    margin: 0px !important;
    box-shadow: 0px 0px 0px rgba(0,0,0,0.07) !important;
}


.tabbrowser-tab[selected=true], .tabbrowser-tab[selected=true]:hover {
    box-shadow: inset 0px 0px 0px rgba(0,0,0,0.12) !important;
    background: #080808 !important;
}#urlbar > #urlbar-icons > #star-button
{
display: none !important;
}#urlbar > #urlbar-icons > #star-button
{
display: none !important;
}#content browser { margin-right:-14px!important; overflow-y:scroll; overflow-x:hidden;}
.tab-icon-image {
		visibility: hidden!important;
margin-left: -8px;
}
.tabbrowser-tab {
height: 15px !important;
min-height: 15px !important;
max-height: 15px !important;
}
.tab-image-right, .tab-image-left, .tab-image-middle {
min-height: 15px !important;
max-height:  15px !important;
}
.tab-close-button > .toolbarbutton-icon {
		display: none!important;
}
.tabbrowser-arrowscrollbox > .scrollbutton-up,
.tabbrowser-arrowscrollbox .scrollbutton-down,
.tabbrowser-arrowscrollbox .scrollbutton-down-box,
.tabbrowser-tabs .tabs-alltabs-box,
.tabbrowser-tabs .tabs-alltabs-box-animate,
.tabbrowser-tabs .tabs-alltabs-button {
height: 15px !important;
margin: 1px !important;
}
#urlbar .autocomplete-history-dropmarker { display:none!important; }
#urlbar-go-button { display:none!important; }#urlbar-reload-button { display: none !important; }#urlbar-stop-button { display: none !important; }

.autocomplete-history-dropmarker { display: none !important; }#go-button { display:none !important; }.tabbrowser-arrowscrollbox > .tabs-newtab-button {
		display: none;
}
#tabbrowser-tabs ~ #alltabs-button { display:none #important; }
tabbrowser toolbarbutton[class^="scrollbutton"],
#tab-throbber, #identity-box, #TabsToolbar toolbarbutton[class^="scrollbutton"]
{
    display: none !important;
}#urlbar { 
max-height: 15px; 
background: none!important;
-moz-appearance: none!important;
} 
#urlbar-container { background-color: #333;!important; max-height: 15px!important; }
#main-window { height: 15px;}
#back-button .toolbarbutton-icon,
#forward-button .toolbarbutton-icon,
#reload-button .toolbarbutton-icon,
#urlbar-reload-button .toolbarbutton-icon,
#stop-button .toolbarbutton-icon,
#urlbar-stop-button .toolbarbutton-icon,
#tabbrowser-tabs tab .tab-close-button .toolbarbutton-icon,
#new-tab-button .toolbarbutton-icon,
/* BUTTONS */
#back-button .toolbarbutton-icon,
#forward-button .toolbarbutton-icon,
#reload-button .toolbarbutton-icon,
#urlbar-reload-button .toolbarbutton-icon,
#stop-button .toolbarbutton-icon,
#urlbar-stop-button .toolbarbutton-icon,
#tabbrowser-tabs tab .tab-close-button .toolbarbutton-icon,
#new-tab-button .toolbarbutton-icon,
#appmenu-button .button-icon
{
    list-style-image:url("data:image/png;base64,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")!important;
}
    #back-button .toolbarbutton-icon
    {
        -moz-image-region:rect(0, 11px, 11px, 0)!important;
    }
    #forward-button .toolbarbutton-icon
    {
        -moz-image-region:rect(0, 22px, 11px, 11px)!important;
    }
#nav-bar {
        background-image: none !important;
            background-color: #333!important;
            border: none !important;
            padding: 0 !important;
						max-height: 15px!important;
            border-top: 1px solid #333333!important;
						padding-top: 1.45px!important;
						padding-right: 2px!important;
}

    /*change the ugly throbber*/
    .tab-throbber[progress] {
            list-style-image: url("chrome://browser/skin/places/searching_16.png")!important;
}