Bootstrap It is the most popular front-end component library in the world , Used to develop responsive layouts 、 Mobile devices are preferred WEB project .
Bootstrap4 Is a set for HTML、CSS and JS Open source toolset developed . Use what we offer Sass Variables and large numbers mixin、 Responsive grid system 、 Expandable prefabricated components 、 be based on jQuery Powerful plug-in system , Be able to quickly prototype your idea or build an entire app .
Who is suitable for reading this tutorial ？
As long as you have HTML and CSS Basic knowledge of , You can read this tutorial , And then develop your own website . After you finish this tutorial , You can use Bootstrap development Web Medium level of the project .
Before reading this tutorial , What you need to know ：
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Bootstrap4 And Bootstrap3
Bootstrap4 yes Bootstrap The latest version of , And Bootstrap3 Compared with having more specific classes and turning some relevant parts into relevant components . At the same time Bootstrap.min.css The volume of is reduced 40% above .
Bootstrap4 Give up on IE8 And iOS 6 Support of , Now only support IE9 above And iOS 7 Browser version above . If you need to use the previous browser , Then please use Bootstrap3.