To create custom buttons, we will use Bootstrap's Sass mixins in this recipe.
To see the final result, open the chapter4completed code's app folder, and run the git bash on it. Follow it up with the harp server command, and navigate to localhost:9000 in your browser to see the result we will achieve in this recipe.
Upon opening the web page as explained in the preceding paragraph, you should see six fully functional custom buttons at the bottom of the page.