Resources

Responsive Meta Tag: http://css-tricks.com/snippets/html/responsive-meta-tag/

Normalize.css: http://necolas.github.io/normalize.css/

Paul Irish, * { Box-sizing: Border-box } FTW: http://www.paulirish.com/2012/box-sizing-border-box-ftw/

Chris Coyer, All About Floats, http://css-tricks.com/all-about-floats/

Chris Coyer, Responsive Meta Tag http://css-tricks.com/snippets/html/responsive-meta-tag/

px/em/% conversion site, http://pxtoem.com/

CanIUse.com, browser support for HTML/CSS http://caniuse.com

Want to make all boxes the same height? Try this: https://github.com/Sam152/Javascript-Equal-Height-Responsive-Rows

Media Query & Asset Downloading Results http://timkadlec.com/2012/04/media-query-asset-downloading-results/

Responsive images
Choosing a Responsive Image Solution http://www.smashingmagazine.com/2013/07/08/choosing-a-responsive-image-solution/
Which Responsive Image Solution Should You Use http://css-tricks.com/which-responsive-images-solution-should-you-use/
PictureFill: A responsive image polyfill http://scottjehl.github.io/picturefill/
HiSRC: jQuery based plugin for mobile and HD images https://github.com/teleject/hisrc
Responsive Design Frameworks: Just because you can, should you? http://mobile.smashingmagazine.com/2014/02/19/responsive-design-frameworks-just-because-you-can-should-you/