Hi, David. The button is added as an HTML extension (custom DIV) and styled with external CSS. There are no image files required. If you are unfamiliar with CSS or even if you’re an expert I suggest trying Enjoy CSS. Enjoy CSS is an online CSS generator that uses a Graphical User Interface. You design your element, in this case a button, with simple tools and it spits out the necessary code for you to copy and paste. Very simple, efficient and time saving.
The benefits to having buttons created in this manner are numerous. Two that jump right out are almost ZERO weight and the having the ability to change any style of the button at any time.