Collapsible menu

Hello,

I am looking for custom css to create a collapsible half page/menu like the one on this website - https://taylorannphotos.com/ when the plus sign is clicked. Any advice? 

Something like this should work for you, but I'm not sure it's the same plugin they are using:

https://www.ghostplugins.com/products/mini-mobile-menu-in-squarespace-71

I think the website might be a SquareStylist template.

thank you! I will try this out. 

Hi Ziggy, thank you for that plug-in info. Do you have any ideas on how to make that menu more like a customizable page, not just a generic menu of the site's pages? Here is another example - https://www.chargladden.com/

Thank you! 

You would need some type of mega menu, this might be a good option, but there are lots of alternatives:

https://www.will-myers.com/products/p/hamburger-menu