@namespace url(http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul);
.tabbrowser-tab:not([selected="true"]) {
-moz-border-top-colors: transparent !important;
}
.tabbrowser-tab:not([selected="true"]) {
-moz-border-radius: 0px !important;
-moz-appearance: none !important;
}
.tabs-bottom {
display: none !important;
}