Links sobre epic, feature e user story 2

https://www.visualstudio.com/en-us/docs/work/kanban/kanban-epics-features-stories
https://softwareengineering.stackexchange.com/questions/182158/relationship-between-user-story-feature-and-epic#
https://blogs.msdn.microsoft.com/aaronbjork/2010/04/19/agile-tip-1-epics-and-themes/
https://alistapart.com/article/responsive-web-design
http://caniuse.com/