Social Buttons for Bootstrap - GitHub Pages How to use. Include Bootstrap and Font Awesome If you haven't done that already, include the latest Bootstrap and Font Awesome in your project. Include the CSS or Less You have two options for enabling the social buttons in your project: vanilla CSS or source Less. For vanilla CSS, just include the bootstrap-social.css file into your project. ShareThis: Free Social Share Buttons & Plugins for Websites After you design your share buttons, you can click the “register & get the code” button to get the share button code. Copy the code under “Install sharethis.js on your website.” Then log in to your Wix account to enter the HTML code into the text box. Check out this support post for more details on How to Install Share Buttons on Wix.