[RegUserOnly]
You can enable Filters (categories) on mobile view in case if your design is Top Sidebar (menu) based, for example: Athena, in the other case it’s not possible with pure CSS.
Navigate to Appearance > Customize > Custom CSS (section) and add the following snippet:
@media screen and (max-width: 950px) {
.sidebar-top .filters { display: block !important; }
}
[/RegUserOnly]
