About the Author

Hampton Catlin is the inventor of Sass, Haml, and Wikipedia Mobile. With 20 years' experience building websites used by millions of people a day, he's one of the most respected developers in the industry. Michael Lintorn Catlin is a web developer; co-founder of rarebit, a boutique tech consulting firm; and co-creator of Wordset, the collaborative online dictionary. Michael has dual masters' degrees from both Oxford and Cambridge Universities.