Bootstrap is well-suited with the new versions of all major web browsers. It stylishly degrades when used on older browsers like Internet Explorer 8.
Since version 2.0 it also supports responsive web designing. This means the layout of web pages adjusts animatedly, nice-looking into account the characteristics of the device used (Smartphone, desktop systems, tablet).
Starting with version 3.0, Bootstrap adopted a Smartphone first design beliefs, emphasizing responsive layouts by default.
Bootstrap is open source scripts and its available on GitHub. Web Developers are positive to contribute in the project and make their own contributions to the platform.