Lynx is a clean, super-duper customizable & flexible, and has a fully responsive design. Built with HTML5 & CSS3 & Bootstrap 3, a lot of thought and care went into this theme making it a pleasure to use. Lynx gives you an awesome tool to get your website noticed!
Demo: http://themeforest.net/item/lynx-3-in-1-retina-responsive-wordpress-theme/6121177