Adding social media sharing buttons (html and css) to a component

I've never created a component. I am using the SDK. I have been tasked to learn how to create a component that I can add social media sharing buttons too. I am looking at using  https://sharingbuttons.io/ which contains just HTML and some CSS. Any suggestions on where to get started? Doesn't appear to require any Freemarker, just dropping in the HTML and CSS.

Thanks in advance.