UIkit by Yootheme is a stand alone web framework, which allows you to build lightweight and well-structured websites by the help of modern script technologies and a compilation of powerful components, which are combinable with each other. Yootheme provide this free framework on GitHub. The integrated customizer helps you to create beautiful template styles with few clicks. Great CSS skills are not necessary for that. UIKit use also LESS, which is good for the website speed. You can use this framework, like Bootstrap, platform-independent under MIT License.