# 2.0.0-alpha.41 (2015-12-8) ### Breaking Changes #### CSS Refactor * Attributes are now used by Ionic to add the correct CSS classes to elements * Drastically reduced the depth of CSS selectors * Further modularized Sass files to allow individual imports * Ionic CSS comes in 3 flavors * `ionic.css`: Core CSS, iOS CSS, and Material Design CSS * `ionic.ios.css`: Core CSS and iOS CSS * `ionic.md.css`: Core CSS and Material Design CSS * App's `index.html` file can be setup to dynamically load only the stylesheet it needs * Different Sass color maps for iOS and Material Design * Allows colors to be different per platform * ie: Gray navbars in iOS, blue navbars in MD. Identical HTML/JS #### `` renamed to `` * `primary` attribute `` now `` * `secondary` attribute `` now ``