button.filtertool-groupingButton:disabled {
    font-weight: bold;
    color: black;
    text-decoration: none;
}

button.filtertool-groupingButton:nth-child(2)::before {
    content: " / ";
    color: black;
    display: inline-block;
    margin-right: 1rem;
}

button.filtertool-groupingButton:nth-child(2):disabled::before {
    font-weight: normal;
    text-decoration: none;
}