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About the Author
Jen Simmons is a designer and developer advocate at Mozilla and a member of the CSS Working Group.
Jen—who has been creating websites since 1996—works as an independent consultant and trainer helping teams transition to a responsive design process, implement sites with HTML5, or architect Drupal websites to last. She also provides a mix of design and front-end development services. Besides designing for the web, Jen has years of experience designing for live performance and for print. From 2011–2015, she was the host and executive producer of The Web Ahead. Jen continues to share her passion for CSS and design by speaking at conferences and making videos.