How can I change the color of my 'add to cart' button?

[Vizono]

website link: vizono.co

On the shop page, I want to change the 'add to cart' button color and 'choose option' button colour to 

Background: #F888C8

Border colour: #F888C8

Text: #ffffff

Also, I want to Disable the Shadow.

Anyone can help me with the code in order to change the button ? Thanks.

[BSS-Commerce]

Oh it looks like you've fixed your button. Congratulations, it's very beautiful.

https://vizono.co/collections/products

[Vizono]

Thanks!