tr th {
    border: 1px solid #ddd;
    padding: 8px;
}
@media (max-width: 639px) {
    #dt-length-0  {
        display: none !important;
    }
    label[for="dt-length-0"] {
        display: none !important;
    }
}
#column-dropdown-button {
    min-width: 220px;
    max-width: 220px;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}
#column-filter {
    width: 250px;
    max-width: 100%;
}
#column-dropdown-text {
    display: inline-block;
    max-width: 100%;
    text-overflow: ellipsis;
    white-space: nowrap;
}