Historically, most web designers and their clients have approached the desktop side of any project first, while leaving the mobile part as a secondary goal that gets accomplished later. Even with the rise of responsive design, many of us begin with the “full size” site and work our way down.

The iconic font designed for use with Twitter Bootstrap

"Mozilla Webmaker is a new program to help people everywhere make, learn and play using the open building blocks 
of the web. // The goal: help millions of people move from using the web to making the web. /With new tools to use, projects to create, and events to join, we want to help the world increase their understanding of the web and take greater control of their online lives. //Mozilla Webmaker will offer: // Tools. Authoring tools and software, designed and built with our community. From supercharging web video with Popcorn, to remixing with Hackasaurus, to making your own web pages with Thimble. // Projects. Practical starter projects, how-tos and recipes, designed to help people at all levels make something amazing with the web. From tweaking your blog template to building apps that change the world. // Community. Bringing people with diverse skills and backgrounds together. Teachers, filmmakers, journalists, youth. From web ninjas to newbies.

Awesome magazine-style site

A CSS Maker, creator that shows a preview and gives you browser compatibility details.