Does Astra free theme support limited length menus

what I mean is for the menu with lots of items, to be limited in length and to have like a arrow to click to show more items.

in my page above, click on the Moth Families – Micros menu – you can see it scrolls way below the page height.

Hope I’ve shown what I mean

thanks

Richard

The page I need help with: [log in to see the link]