.nav-item_dropdown:hover {
    background-color: #1a2547;
}
.dropdown-content {
    display: none;
    position: absolute;
    background-color: #1a2547;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
}
.dropdown-content a {
    color: black;
    padding: 10px 16px;
    text-decoration: none;
    display: block;
}
.nav-item_dropdown:hover .dropdown-content {
    display: block;
}
.dropdown-item a:hover{
    background-color: #565656;
}