The World Wide Web Consortium (W3C) technology for Web design, Cascading Style Sheets, is celebrating its tenth anniversary this week, W3C said on Tuesday. To mark the occasion, W3C is launching a year-long CSS design competition with selections to be made by CSS co-authors Bert Bos and Hakon Wium Lie. Designs will be selected based on originality, utility and aesthetics and be featured in the CSS10 Gallery.CSS has changed the face of the Web, W3C said in a statement. “The design community has confirmed that using CSS promotes beauty while making it easier and less expensive to build sites,” Bos said in a statement released by W3C. CSS features a simple declarative style enabling designers to set positioning, margins and alignment, layering and other elements, W3C said. Reuse also is a benefit.With CSS, markup is separated from style, enabling accessibility agents to convey information to users with disabilities. CSS style sheets allow for the same document to be viewed with different devices, ranging from color monitors to mobile phones and printers. Level 3 of CSS, which is intended to make CSS easier to use, is in development. It features rich hypertext, more powerful borders and backgrounds and user interaction capabilities. W3C said it has a released a new version of the CSS validator. Adobe Systems last week unveiled CSS Advisor, a Web community to help with developing CSS-based Web pages. Technology Industry