Well, I assume is a component. Can be a layout or a partial, you go there, read the classes, make your changes according to the new design. In case you need extra clases, let's say, you need to introduce something like pointer-events, you go to the framework, you activate it in the config file, then use the class on the div. In case you need extra customization, you write a custom class ex. c-10 and you apply interactions needed (:hover, :focus, etc.).