what is Bootstrap: Bootstrap is the most popular CSS Framework for developing responsive and mobile-first websites.

what is CSS: CSS is the language we use to style an HTML document.

CSS describes how HTML elements should be displayed.

This tutorial will teach you CSS from basic to advanced

what are the differences between Bootstrap and CSS

1) Bootstrap is a free and open-source front-end framework for designing websites and web applications -> CSS is a style sheet used for describing the presentation of a document written in a markup language like HTML

2) Bootstrap provides a grid system, which creates a page layout through a series of rows and columns that can place the content -> CSS has no grid system

3) Bootstrap comes with more features -> CSS comes with few features if compared to Bootstrap

4) Bootstrap helps to create responsive designs that are more presentable -> CSS helps to create presentable webpages

5) Bootstrap contains designed classes which the program can use in his program to add styling to the elements without writing code from the beginning -> In CSS program should write the code from scratch