Responsive CSS bars
This was one of my favorite animations to create thus far, I got to use several techniques I have used on other projects including
Negative animation delay
A CSS only square container
Perfectly (to three decimal places) spaced animations
Based on http://31.media.tumblr.com/a0d1fbce4ef58e077d0274ad9bc746d1/tumblrmx37tz7pzO1r2geqjo1500.gif