Months at top

I’d like the Month arrow to show at the top, not the bottom. A few years ago you had me put this code in Custom CSS and it still works today but it doens’t work on my new WordPress install:
#content #tribe-events-header .tribe-events-sub-nav li,
#content #tribe-events-header .tribe-events-sub-nav .tribe-events-nav-next a {
display: block;
}

What else do I need to do?
Works: https://www.aiasandiego.org/events/
Doesn’t work: https://www.aiapalomar.org/aianew/event/

Thanks!