17.03.2022, 14:54
Use media queries. For example, this CSS rule will apply to iframe with width set to 480. If the second one has 481 then these styles won't apply to it.
Code:
@media (min-width: 480px) and (max-width: 480px) {
.view-frame .content .tbl-events tbody tr.warning td {
background-color: #ff0000;
}
}