Single Add To Cart
Single Product Add to Cart module is use to display add to cart button.
Style Tabs
The Style Tab lets you change the background-color, borders, layout, padding, text color, style size etc of your Single Add-to-Cart Button.

style tab show button background-color, font-size, font color and hover color.

This tab show border style, width, color and border radius, hover border color.

This tab show button margin, padding, text-transform.
Quantity Tabs
The Qunatity Tab lets you change the background, design, borders, layout, padding, text color, style size etc of your Single Add-to-Cart Button.

This tab show quantity font-size, font-family, text color, margin, padding.

This tab show quantity border style, color, width, radius.