In this mobile-friendly world its not only the choice but necessity for every website/app to be responsive. With this comes the unconditional love for Bootstrap. Today, it stands as one of the most popular, open-source, front-end frameworks on the Web. It was officially released in 2011, and since then it has undergone several changes. Today, it is one of the most stable and responsive frameworks available. Including me and our team at Dharmishi Technologies it’s loved by web developers of all levels. It gives us the capability to build a functional, attractive website design within minutes. Even a novice developer who has just some basic knowledge of HTML and little CSS can easily get started with Bootstrap. He can easily come up with a responsive website within hours of time.

Irrespective of the project size, Bootstrap provides a solid foundation for any website. It contains Reboot, which is based on Normalize.css and helps level out browser differences for various page elements. It also provides great typography. To give them a modern look, even basic HTML form elements like select options, check boxes, radio buttons, etc., have been rested in the framework. I and my team use Bootstrap because it saves our considerable amount of effort and time too.
Today’s websites should be sleek, modern, professional, responsive, and “mobile first”. Bootstrap helps us to achieve these goals with minimum do.
Here are the top five reasons why we love Bootstrap

Open Source
This awesome framework is an open-source project that’s hosted on GitHub and released under the MIT license. This makes it one of the biggest reasons I use Bootstrap. Being open-source our clients also won’t have to deal with purchasing and licensing issues. And Bootstrap’s license gives me the freedom to completely change and experiment with it.
Browser Compatibility
Bootstrap is compatible with the latest, stable releases of all major browsers and platform like Chrome, Firefox. With regard to the Windows platform, Bootstrap works in Internet Explorer versions 10–11 and Microsoft Edge too. Additionally, You can create a website design that works in all these browser perfect if Bootstrap’s instructions are followed properly.

Of course, if your employer wants to make a website that looks exactly the same in IE7–8 as it does in modern, standards-compliant browsers, then surely it might be time to think about switching jobs!
Bootstrap’s Flexible Grid System
Bootstrap has one of the best responsive, mobile-first grid systems available. It’s built with easy to use Flexbox. It helps in scaling a single website design from the smallest mobile device to high-definition displays. It logically divides the screen into 12 columns. Using which, we can decide just how much screen real estate each element of your design should take up.

Although developers have CSS Grid Layout for layout building, the Bootstrap Grid component can still be handy for quick prototyping — at least while we get more familiar with the new native CSS tool at our disposal today.
Rapid Development
The framework comes complete with many reusable CSS and JavaScript components. These components can help achieve every functionality needed in almost any kind of website. You just have to use some HTML classes to plug them into your template. No need to spend huge amounts of time writing complex CSS and JavaScript. Besides, all these components are responsive, too!
Unlimited Customization
Bootstrap offers many ways to customize its default design. You can override all of its CSS and default JavaScript behavior. Moreover, it is even more interesting if you’re a Sass developer, as it includes Sass customization options. These options let you smoothly create a new template. However, if you are not, it won’t make a lot of difference.
The longer you wait to take action, the more you fall behind.