.tabulator input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    border: 1px solid black;
    border-radius: 1px;
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.tabulator input[type="checkbox"]:checked {
    background-color: red;
}


.tabulator-row.tabulator-selected {
    background-color: transparent !important;
}