A CodePen by Hugo Giraudel. Pure CSS pie timer - Thanks @Joshua Hibbert for the border-radius trick. :)

Be sure to have a look at :  
* The GitHub repo: https://github.com/HugoGiraudel/CSS-Pie-Timer  
* The article about it on CSS-tricks : http://css-tricks.com/css-pie-timer/  
* Ludvig Lindblom's version allowing gradients : http://codepen.io/ludviglindblom/details/dfjAt  
* Mahroof Ali's version built slightly differently : http://codepen.io/anon/pen/ItEni  
* Anders Grimsrud's version with SVG : http://codepen.io/agrimsrud/details/EmCoa.