Customizing add to cart button

I’m using the shortcode [wp_cart_button name=”StockGame certificates” price=”25.00″ button_text=”Purchase initial or additional certificates”], which gives me a button like this:

https://tbiwhiteoak.org/wp/wp-content/uploads/2022/12/Current-button.png

I want to emulate the style of this button:

https://tbiwhiteoak.org/wp/wp-content/uploads/2022/12/Desired-button.png

I have searched everywhere, and not found any information about how to use CSS or any other method to accomplish this. Any ideas would be greatly appreciated.

That did the trick. Thank you very much.