What is BootStrap?

BootStrap：

* Responsive HTML, CSS, JS framework.

* Responsive design:

* Design a set of pages that adapt to different devices and can be browsed normally on mobile phones, PADs, and PCs.

* Responsive principle:

* Use CSS3 media queries, Match different styles according to the screen resolution.

* BootStrap:

* Global CSS:

* Grid:

* Form:

* Button...

* Component:

* Navigation bar:

* Paging bar:

* Tab page:

* JS plug-in:

* Picture carousel.

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