.limited-height tbody {
    display:block;
    height:60vh;
    overflow:auto;
}
.limited-height thead, .limited-height tbody tr {
    display:table;
    width:100%;
    table-layout:fixed;
}
.limited-height thead {
    width: calc( 100% - 1em )
}
.overflowing-table {
    max-height: 60vh;
    overflow: scroll;
}
.overflowing-table thead tr th {
    position: sticky;
    top: 0;
    background: white;
}