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If you want to style the button for your website then the just add the class "epicpxls-buy-button-custom" to the link and it will still open the modal but allow you to customize the look and integrate it better in your website.
Here are examples of how your code would look like with custom class:
You can put any image, link, button, etc.. as your buy now button. That way you can create a better user experience by creating a button design that fits your website.