A table showing “the screen specifications of the most popular devices and monitors currently on the market.”
A collection of sites that use media queries and responsive web design practices.
“CodePen is a playground for the front end side of the web. It’s all about inspiration, education, and sharing.”
“Need to build a reduced test case to demonstrate and figure out a bug? CodePen is great for that. Want to show off your latest creation and get feedback from your peers? CodePen is great for that. Want to find example of a particular design pattern for you project? CodePen is great for that.”
“A typographic starter kit encouraging great type on the Web”