Stacking elements

To stack multiple icons, use the fa-stack class on the parent, the fa-stack-1x for the regular sized icon, and fa-stack-2x for the larger icon. Try this example (This should be fairly familiar code for you now?): Personally I often make the container a bit bigger (e.g. fa-3x) but it obviously depends on exactly what effect or style you are trying to achieve. Stacking cans you can combine all the Font Awesome icons in new and interesting ways. Having seen the example above of the Twitter button, can you also create the following: Moodle graduation cap in a circle A command line prompt in a square A no photography sign