.w3-teal{
    background: #001f3f !important;
}

.menu-opacity-1{
    /*background: rgba(0, 0, 0, 1) !important;*/
    z-index: 1;
    opacity: 1;
    position: relative;
}

.menu-opacity{
    /*background: rgba(0, 46, 110, 0.5) !important;*/
    opacity: 0.3;
    z-index: 2;
}