What is BootStrap?

• BootStrap is a "Front-end Library".

Then What is Front-end?

• This is whatever user faces whenever they open websites. This includes UI, UX, Button Events,..etc.

You must have heard of Back-end with Front-end...so What is Back-end?

• This tends to reside on the server. It is basically behind the scenes sort of business logic of how your website or how your website is going to work.

  

What is the BootStrap's role?

• Bunch of codes in Bootstrap were already written to be reusable and It will make designing the website much easier for you.

BootStrap in detail

• Developed by Twitter in order to try and more consistency across websites.
• It is free and open-source!
• Second most starred repository on all of github!
• You got access to a whole bunch of a pre-styled elements. So You can simply drop the elements into your code.
• As the number of users are moving away desktop to mobile, a lot of websites need to be responsive. BootStraps provides responsive function.

What is responsive?

• Responds to the viewport adaptable layout.

BootStrap's CDN is in almost continents. What is CDN?

 CDN is a short term of Content Delivery Network. There is always delay when you request and get responds from or to server even if the cables are pretty fast. But nobody likes to wait for website for a long time Instead of hosting your website in a single location. If you have a whole bunch of points where websites can be accessed, then it will be faster for you to request or get response from or to the server.

Why is CDN related to BootStrap?

 In the BootStrap, They've hosted their BootStrap CSS files on many CDN, which has a whole number of hosting points across the world. So It is quick to host BootStrap CSS files anywhere also if BootStrap CSS files are cached on user's browser. It will make it calling the Bootstrap CSS file faster.