Accordion Menus for Drupal 8?

I’ve been searching for weeks for a module or core ability to create accordion menus for my sidebars.

I have Superfish installed, and it has the ability to change a menu into an accordion when the screen goes small, but no option for a full-sized one. I see modules for D7, but nothing for D8.

Am i missing something obvious? Thank you for the assist,

Drupal version: