Help to implement accordion menu in Foundation 6

Hello, I hope you can help me with a few information. I use foundation for a long period of time, but only the minified css file for grid sistem, as a html and css developer. Now, I want to implement a few more functionality like Accordion Menu and others to stop using custom code for this. For first I install Foundation with npm, it works to install, but because I have verry low knowledge of node.js I prefer to uninstall and to download the starter package of Foundation 6 witch include a starter template with index.html, css, and js. As I said although there is information, I don’t really know what to do to make a accordion menu for example to work.

For first, I put the path in index.html for css and js: foundation.css; vendor.js; foundation.js
I copyed the code from Foundation 6 documentation of Accordion menu,
I try to include more js for accordion and what else I see on there
But for now I don’t know how to make this accordion to work, to initiate, and I need someone to give me a few concrete steps to do this.

You can see the code here: https://codepen.io/MateiBogdanVictor/pen/LYxbGXG

Thank you for your help!