The Twenty Twelve (2012 theme) for WordPress is a fully responsive theme that looks great on any device. Features include a front page template with its own widgets, an optional display font, styling for post formats on both index and single views, and an optional no-sidebar page template. Make it yours with a custom menu, header image, and background. You can check the Twenty Twelve theme demo.
You can use my shared code and ask question in the comments section.