#card-table .card-body {
    overflow-y: auto;
    max-height: 410px;
    min-height: 410px;
}

#table-participants {
    position: relative;
    margin: 0;
}

#table-participants thead {
    top: 0;
    margin-top: 0;
    position: sticky;
    background-color: #FFF;
    
}

#table-participants thead th {
    border-bottom: 1px solid #EEE;
}