#nav-bar {
height: 0px !important;
min-height: 0px !important;
overflow: hidden !important;
border:0 !important;
display:none;
}

#nav-bar:hover,
#nav-bar:focus,
#nav-bar:active {
height: auto !important;
border:0 !important;
}
#main-bar {
display:none;
}