bootstrap

BOOTSTRAP

Bootstrap is an open source toOlkit for developing withHTML, CSS, JS. Quickly prototype your ideas or build your entire app with our Sass variables and mixins, responsive grid system, extensive prebuilt components, and powerful plugins built on jQuery.

Bootstrap also gives u to create the way of creating responsive desings.

Advantages oof using bootstrap

FIrst approach in mobile.

Easy to use.

Very responsive features.