3 * Do a quick search and make sure a bug has not yet been reported;
4 * do a quick check if the bug still exists in the latest patch version;
5 * finally, be nice and have fun!
9 * clean-css version - `npm ls clean-css`:
10 * node.js version - `node -v`:
13 ### Configuration options
16 var CleanCSS = require('clean-css');
18 // compatibility: 'ie8',
19 // format: 'keep-breaks',
27 /* the shorter the better! */
35 ### Expected output CSS