Coral Drive is a free responsive theme with one-column or two-column layout, and full page header. The theme is optimized for SEO, and suitable e.g. for a small business site, portfolio gallery site or a blog. You can find a demo site here: http://www.coralthemes.com/demos?theme=Coral-drive . Further customization options are available in the pro version: http://www.coralthemes.com/product/coral-drive-pro-wordpress-theme/ .