Create new design layouts with Sitefinity by dragging and dropping layout widgets onto your page templates. Make two columns, three columns, or whatever layout you like, then resize by dragging and dropping to form your desired dimensions. Add padding, or attach your own special CSS classes to control precisely how the layout displays. Since the layouts are DIV-based, not TABLE-based, they conform with HTML best practices. Even better, attach Responsive Rulesets (CSS3 Media Queries) to your page so the layout can transform for different devices to optimize the mobile user experience. For example, your layout can change from columns to rows to accommodate narrow smartphone screens.