W3Schools Bootstrap Quiz
After I completed this tutorials it came to my understanding that Bootstrap 3 is mobile-first; and that bootstrap is used for developing a responsive mobile first websites using HTML, CSS and JAVA. Also, bootstrap grid system consisted of 12 columns. It is a free front-end framework for faster and easier web development which includes HTML and CSS based for designing templates for typography, forms, buttons, tables, navigation, modals, image carousels etc. Below is my screenshot score of W3Schools quiz I took.
