Focus your time on the browsers/platforms the majority of users are using rather building for the newest and letting the rest settle. IMO, however, building for the newest promotes innovation and encourage users to upgrade.
Cool designs for ideas to revamp your CV.
Ones that I think are professional but still unique are: Illustration for CV, RESUME 2011, RM Brand Identity
Experimental Resume is cute.
AjaXplorer is a software that can turn any web server into a powerfull file management system and an alternative to mainstream cloud storage providers.
A bunch of cool concepts of new HTML5 and CSS3 features. Includes a short description, brief browser comparability chart, fallback strategies, and real-life examples.
With each new release of Windows Internet Explorer, support for the World Wide Web Consortium (W3C) Cascading Style Sheets (CSS) standard has steadily improved. Internet Explorer 6 was the first fully CSS, Level 1-compliant version of Internet Explorer.