Woocommerce

I read that this can be added to woocommerce but I can’t seem to get it to work.

I’ve installed the plugin ok, but nothing is showing.
I added the code in the custom css code:

.ssatc-sticky-add-to-cart { background-color: white; }.

Can you confirm that it works for woocommerce – theme AVADA, and if so what am I doing wrong?

Thanks
Gina

https://ww.wp.xz.cn/plugins/storefront-sticky-add-to-cart/