Open menu after click, not by hover

Hello,
I made a custom header by using Beaver Builder themer. I need help with the menu settings. I don’t know how to describe it, but we would like a menu the same as thefinestore.com.
So the menu should open after click, not by hover and if you mouse to another section of the page, the menu will still be visible.

I made our menu horizontal, but if you mouse the menu goes away. I hope someone understands my question and can help me with this issue.

Our testwebsite is: develop.springstore.nl
We set a simple password for the frontend view, so it’s not visible for all customers yet. The password to see the frontend is: wachtwoord.

Thanks in advance!

Best regards,
Charlotte