How to build web sites that work well across various browsers versions and devices is always challenging for web developers. In this episode, Doris will demonstrate how to develop web content that will run in modern browsers as well as in old browsers using Polyfills and Fallbacks. With a couple of simple changes to your sites, you can take advantage of web standards and HTML5 features today without breaking your sites in the future.

Previous episodes on Building Web Sites that Work Everywhere:

• Building Web Sites that Work Everywhere: Cross Browser Testing for more detail on tools available for interoperability tests (including CSS3 prefix testing), and how to use them.
• CSS3 and Vendor Prefixes for best practices and tools to implement updated CSS3 and their prefixes.
• Browser Detection and User Agent Sniffing illustrates why browser detection and UA sniffing are not right way to check web compatibility.
• Feature Detection illustrates how to implement feature detection by using Modernizr.