Together all these interface components offers trapping of standard compliant, Search engine optimized, user friendly & professionally developed HTML5 websites. None of these interface elements or templates needs further customization. Bootstrap is very extensive and flexible enough for implementing various designs.
Bootstrap has a 12 column layout based on 940px grid which is an easy way to create Templates and themes.
These Twitter Bootstrap interface provides a set of classes mainly used as elements to create design. In addition with this it also provides a good approach for design & format.
Bootstrap uses the design approaches for the great viewing experience in all sized devices. So it uses the concept of responsiveness to adapt the device sizes either it will be on desktop or smart phone.
Bootstrap enables the flexibility to select the elements which are necessary for your design & customize your design according to the preferred styles.