Mozilla's Louis-Rémi Babé rounds up the best Firefox add-ons for web designers and developers and explains how to use them to learn more about HTML, CSS and JavaScript, add an FTP client to your browser and more
Addy Osmani recounts his experience of creating cross-browser polyfill visibly.js and provides plenty of top tips on how you can create your own HTML5 polyfills, while avoiding the headaches developers often run into when coding them for the first time
Don't resort to workarounds to make your site look pixel-perfect in IE6, says Jack Armley. Instead, it's better to try to understand what your users need to achieve from it