#xsem .cards-selectable {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
#xsem .cards-selectable .card-selectable {
    flex-grow: 1;
    cursor:pointer;
    min-width:calc(100% / 3 - 20px);
    margin-left:10px;
    margin-right:10px;
    margin-bottom:10px;
}
#xsem .cards-selectable .card-selectable.selected,
#xsem .cards-selectable .card-selectable:focus,
#xsem .cards-selectable .card-selectable:hover {
    background-color: #ececec !important;
}
#xsem .cards-selectable .card-selectable.preActivated {
    background-color: #cce8f9 !important;
}