August 2015
July 2015
![](http://blogmarks.net/screenshots/2015/07/16/d3bbed24073981dee734e1339129ab35.png)
Useful Pens for Everyday Front End Development - a Collection by Sarah Drasner on CodePen
![](http://blogmarks.net/img/default-gravatar.gif)
![](http://blogmarks.net/screenshots/2015/07/16/2016c7f96e2de40edfe3b7aa3e65488c.png)
Animation Principles for the Web - a Collection by Donovan Hutchinson on CodePen
![](http://blogmarks.net/img/default-gravatar.gif)
May 2015
December 2014
September 2014
September 2013
![](http://blogmarks.net/screenshots/2013/09/03/df9165925c6d9a9dcb5948e12e03d512.png)
CodePen playground for the front end side
![](http://blogmarks.net/avatar?url=http%3A%2F%2Fwww.drop-zone-city.com%2FIMG%2Fauton1.jpg)