.thema{
    border-bottom: solid 1px gray;
    overflow: hidden;
    height: 70px;
    transition: height 0.5s;
}
.thema.active{
    border-bottom: solid 1px var(--primary);
    height: auto!important;
}
.thema.active h3{
    color: var(--primary);
}

.seminar-details-mehr:hover{
    color: var(--primary);
    cursor: pointer;
}

.seminar-details-weniger:hover{
    color: var(--primary);
    cursor: pointer;
}