Overview
When you are prototyping an idea or time to market is your top priority Bootstrap is an invaluable tool. It provides a CSS framework and some javascript tools which allows you to quickly build and attractive site without much thought to the UI. It takes some upfront investment in time to get familiar with the provided components but it pays off over time as you find yourself able to build sites in minutes. I’d recommend skimming through the documentation to familiarize yourself with the available features so that you can dive deeper when you find a need.
Responsive design is built in, and you’ll find common elements look great out of the box- forms, button, dropdowns, tables, modals, and more are built in.