«Rapid Bootstrap V4» is a toolkit for kickstarting web-projects, apps, and more. It includes the essential set of CSS elements optimized for perfect typography, a super simple fluid grid system and everything else necessary to develop mobile friendly content. It is optimized for speed and efficiency, only 2kb gzipped, and will support all major desktop and mobile browsers. One of the cleanest and simplest bootstraps you will ever get you hands on. Please support humans.txt (http://humanstxt.org/). It's an initiative for knowing the people behind a website. It's a TXT file that contains information about the different people who have contributed to building the website.