Customizing javascript in Foundation 6

Hello,

I’m relatively new to coding (got the hang of html/css, javascript is a bit tricky) and I downloaded the css version of Foundation 6. I really like it, but there are some javascript functions giving me a headache.

I would like to customise the javascript nav dropdowns buttons, colors, hover behaviour or remove arrows for example.

How can I do this and is there a cheatsheet to help me find what I’m looking for?

Thanks in advance for any advice.