The description of Bootstrap Tutorials For Beginners
This tutorial has been prepared for anyone who has a basic knowledge of HTML and CSS and has an urge to develop websites. After completing this tutorial you will find yourself at a moderate level of expertise in developing web projects using Twitter Bootstrap.
The site derives its name from the World Wide Web (W3), but is not affiliated with the W3C.
W3Schools was originally created in 1998 by Refsnes Data, a Norwegian software development, and consulting company.