Silly stuff with CSS

See the Pen lazy bubbles by Aaron Hans (@aaronhans) on CodePen.

The above embed is a quick example of neat effects you can create without even using javascript. CodePen is a beautiful tool. Using it to experiment with different HTML templating and CSS preprocessor capabilities offers a quick way to learn by testing out different techniques and experiencing real time results. The speed at which your changes take effect is an integral part of the magic. What Chris Coyier has built here reminds me of the inspiring Inventing on Principle video by Bret Victor where he describes how creativity can flourish when we are not constrained by our tools.