.b-menu-shader {
    display: block;
    position: absolute;
    width: 100%;
    height: 47px;
    top: 0px;
    left: 0px;
    z-index: 10;
}
.nav.navbar-nav li {
    position: relative;
}
.nav.navbar-nav li.dropdown > .b-menu-shader {
    width: calc(100% - 75px);
}
.nav.navbar-nav .dropdown.mobile-menu-item {
    display: none;
}
@media screen and (max-width: 767px) {
    .nav.navbar-nav .dropdown.mobile-menu-item {
        display: block;
    }
}