A good friend of mine, Laurent Brucher was tasked to interview a candidate with regards to his front end skills. We talked for a while, shared ideas and in the end he came up with a clever challenge for the candidate to code out.
Inspired in his challenge I’ve crated this one below
Create a JS fiddle with your solution. Use only HTML and CSS
Whom ever uses less classes and less attributes will be declared the winner.
Digital Caveman 
Christian asked me to take this up…I had emailed the solution to him. But, just in case, here is my Fiddle – http://jsfiddle.net/adityadineshsaxena/cVJRG/
Btw, interesting problem as it is quite easy to miss out on any of the minor elements in the PIE 🙂
Nice Aditya! Thanks for contributing =) need to think up more complicated ones
http://codepen.io/skeep/details/ivpjg
So technically I would prefer to use clip to make pie, but given you have some shadows, I did what Aditya did :).
As the solution is for this scenario and this scenario only I have not used any class.