This layout is responsive, 100% CSS based and can be edited with Dreamweaver, Expression Web, Frontpage 2003 or the editor of your choice. It does come with a dwt file for making global changes. It is also XHTML compliant and includes a fully commented css file. The design is set up to adapt to screen size and is optimized for desktops, tablets and smartphones. You can try it yourself by dragging the corner of your browser to reduce the display size. You should see the layout change as the size shrinks.