Plugin for patching old versions of IE (7 and 8)to work with CSS3 selectors and Media Queries.
Mimics HTML5 placeholder behavior in browsers that don't natively support it.
Adds support for the proposed responsive image format in post content, and helper functions for theme authors.
Adds fallback support for the HTML5 <details> and <summary> elements in browsers that don't support them.
RSS link for this tag.