Variants buttons not showing up on product page

Hi there,

I'm currently working on adding a small store on my company website (Business Plan on 7.1), and I'm facing an issue I can't resolve.

I've added several variants, and the buttons are not displayed on the product page (any product). They do exist, 'cause when I go hover them I can see them, but the default "state" seems to be hidden. 

I tried removing all custom CSS I've been adding, I also tried deleting the product and created a new one but it didn't change anything, so I don't know where the problem is.

Does anyone has an idea ?

Thanks !

Page url : https://www.la-bise.fr/les-produits/p/lampe-2
Password : labisestore

Hi @tuanphan,

Thank you very much, your code solved the issue !

Thank you! This worked for me as well! I just changed the background color in the code from black to the hex code  😀