#tl_navigation .group-akvp2 {
    position: relative;
}

#tl_navigation .group-akvp2::before {
    content: "";
    position: absolute;
    left: 3px;
    top: 2px;                       /* identisch zu NCs background-position */
    width: 16px;
    height: 16px;
    background-color: currentColor;
    mask: url("/bundles/akvp2/img/akvpsystem.svg") center / contain no-repeat;
    -webkit-mask: url("/bundles/akvp2/img/akvpsystem.svg") center / contain no-repeat;
}