How to stop customers from adding items once the quantity has reached on variance products

[earthtreasures]

On Crave theme I'm trying to stop customers form adding to carts once the quantity of a variant product has reached the inventory available.

Also, if I can display beside the add button the available quantity.

URL:   https://earthtreasuresusa.myshopify.com

[Zworthkey]

@earthtreasures 
I can see it already block the Customer to add more then the available quantity.

Which part are you looking can you elaborate it properly.