.portal-dropdown {
    cursor: pointer;
}

    .portal-dropdown:first-child {
        cursor: pointer;
    }

@media only screen and (max-width: 767px) {
    .portal-dropdown.subnav-open .portal-subnav {
        max-height: 400px;
    }
}

@media only screen and (min-width: 768px) {
    .portal-dropdown:hover .portal-subnav, .portal-dropdown.subnav-open:hover .portal-subnav {
        visibility: visible;
        opacity: 1;
        z-index: 1;
    }
}

.portal-dropdown-target {
    -moz-transition: max-height 0.5s;
    -o-transition: max-height 0.5s;
    -webkit-transition: max-height 0.5s;
    transition: max-height 0.5s;
    display: block;
    overflow: hidden;
}

.portal-dropdown .attributeName:before {
    content: '+ ';
}

.portal-dropdown.subnav-open .attributeName:before {
    content: '- ';
}