Expression Web is a professional design tool to create modern, standards-based sites that deliver superior quality on the Web. Standards-based Web Sites. Create CSS-based, XHTML 1.0 Transitional-conforming Web sites by default. Work better across browsers, simplifying deployment and maintenance. Sophisticated CSS-based Layout and Formatting. Generate elegant, modern CSS layouts with state-of-the-art surface design tools. Directly manipulate positioning, sizing, margins and padding. Rich Data Presentation Build and format views of industry-standard XML data using drag-and drop tools for quick visualization. An XPath expression Builder allows you to create complex queries. Powerful Server Technology Harness the power of ASP.NET 2. to transform your sites into dynamic, interactive Web applications. No code data binding required with integrated support for server and user.