/* Parent menu item */
.tools-menu {
    position: relative;
}

/* Hide dropdown by default */
.tools-menu .dropdown {
    display: none;
    position: absolute;
    top: 100%; /* directly below Tools */
    left: 0;
    background: #fff;
    border: 1px solid #ccc;
    min-width: 160px;
    list-style: none;
    padding: 0;
    margin: 0;
    z-index: 1000;
}

    /* Each dropdown item */
.tools-menu .dropdown li {
        padding: 0;
}

.tools-menu .dropdown a {
        display: block;
        padding: 8px 12px;
        text-decoration: none;
        color: #333;
}

.tools-menu .dropdown a:hover {
            background: #f0f0f0;
}

/* Show dropdown on hover */
.tools-menu:hover .dropdown {
    display: block;
}

.nav-item {
   display : inline-block;
   vertical-align : top;
   position : relative;
}

.nav-link {
    white-space : nowrap;
}