HTML5 and CSS3 bring loads of new features and functionality to the modern web. This site is a resource and showcase of some of the newest, and most expressive features being added to the web today.
Twitter clients usage in the last 24 hours
According to Twitter public timeline - CSS3 used, best viewed with webkit and latest mozilla browsers : Chrome, Firefox, Safari
A framework of HTML 5 guarantees validity of the coding, without much complex coding that may prone to more errors. Additional effects with JQuery scripts as well as CSS3 styles would enhance the entire functionality of the resultant layouts.