How can I make the opacity dark on image hover

Shopify Discussion
1

How can I make the opacity dark on image hover.

link: https://7iqpqadrtoply8d9-49295786151.shopifypreview.com

img-hover.JPG
img-hover.JPG1909×871 85 KB

2

Hii, @Janamir
Kindly share your store URL and a screenshot so,
I can solve it perfectly.
Thank You.