Introduction In one of my previous articles I talked about using the Bootstrap CSS framework in web projects. Exactly 2 years after the very first release of Bootstrap to the open world by the ex-Twitter developers we have now Bootstrap v3 - the new version of the most popular CSS framework. I’m calling it the most popular because of the recently announced results from the meanpath source-code search engine which shows that 1% of websites nowadays are using Bootstrap....the feature, progressive enhancement will be aimed mainly at improving...