#bs4 td {padding-right:10px;}
#bs4 .card > a[aria-expanded="false"]:after {
    content: "\f107";
    font-family: 'Font Awesome 5 Free';font-weight: 900;
    float: right;
}
#bs4 .card > a[aria-expanded="true"]:after {
    content: "\f106";
    font-family: 'Font Awesome 5 Free';font-weight: 900;
    float: right;
}
#bs4 .card a.card-header{
cursor:pointer;
}