When using new or experimental CSS, it can be useful to know if the browser supports the features we’re writing code for.   Feature detection is often done in JavaScript with tools like Modernizr but in some browsers, we can now detect capabilities from CSS.   The @supports rule allows us to conditionally apply styles for features that are or are not supported. In this episode we’ll learn all about Browser support for various CSS features How the @supports at-rule works and how to provide alternative styles for unsupported features