Bootstrap is an open-source CSS, JavaScript framework that was originally developed for twitter application by twitter's team of designers and developers. Then they released it for open-source. Being a longtime user of twitter bootstrap I find that its one of the best for designing mobile ready responsive websites. Many CSS and Javascript plugins are available for designing your website in no time. It's kind of rapid template design framework. Some people complain that the bootstrap CSS files are heavy and take time to load but these claims are made by lazy people. You don't have to keep the complete bootstrap.css in your website. You always have the option to remove the styles for components that you do not need for your website. For example, if you are only using basic components like forms and buttons then you can remove other components like accordions etc from the main CSS file. To start dabbling in bootstrap you can download the basic templates and components from getbootstrap site and let the magic happen.

Bootstrap是一个带有许多组件的HTML, CSS, JS框架，可以让您快速创建美丽而现代的网站或web应用程序。

以下网站包含示例、元素和可重用组件，您可以使用引导框架集成到您的项目中

bootsnipp.com

startbootstrap.com

bootdey.com

简单地说，Bootstrap可以理解为一个前端web框架，它是由Twitter创建的，用于更快地创建设备响应式web应用程序。Bootstrap也可以主要理解为定义在其中的CSS类的集合，可以简单地直接使用。它利用CSS, javascript, jQuery等在后台为Bootstrap元素创建样式，效果和动作。

You might know that we use CSS for styling webpage elements and create classes and assign classes to webpage elements to apply the style to them. Bootstrap here makes the designing simpler since we only have to include Bootstrap files and mention Bootstrap's predefined class names for our webpage elements and they will be styled automatically through Bootstrap. Through this, we get rid of writing our own CSS classes to style webpage elements. Most importantly Bootstrap is designed in such a way that makes your website device responsive and that is the main purpose of it. Other alternates for Bootstrap could be - Foundation, Materialize etc. frameworks.

Bootstrap让你从编写大量的CSS代码中解脱出来，它也节省了你在设计网页上花费的时间。

Bootstrap是开源的HTML框架。几乎所有浏览器都兼容。基本上大屏浏览器的宽度是>992px和特大号1200px。因此，通过使用Bootstrap定义的类，我们可以调整屏幕分辨率，以显示从小手机到大屏幕的每个屏幕上的内容。我尽量简短地解释。 例如:

<div class="col-sm-3">....</div>
<div class="col-sm-9">....</div>

Bootstrap is the world’s most popular and widely used open-source framework for developing with HTML, CSS, and JS. It is a front-end framework of HTML. Bootstrap helps in building responsive websites or web applications and a 12-column grid system that helps dynamically adjust the website to a suitable screen resolution. The current version of bootstrap is 4.3.1 and the bootstrap team has also officially announced Bootstrap 5 version and changes like removing jquery from bootstrap. Some of the crucial reasons why the bootstrap framework is most preferable are

它很容易使用 Bootstrap有很大的社区支持 定制可以很容易地完成 它提高了开发速度 响应性 更多详细信息，请登录官方网站:https://getbootstrap.com/

在进行基于Bootstrap的项目时，建议使用Bootstrap 5管理模板。

来源:https://vmokshagroup.com/blog/bootstrap-advantages/

Bootstrap is an open-source CSS, JavaScript framework that was originally developed for twitter application by twitter's team of designers and developers. Then they released it for open-source. Being a longtime user of twitter bootstrap I find that its one of the best for designing mobile ready responsive websites. Many CSS and Javascript plugins are available for designing your website in no time. It's kind of rapid template design framework. Some people complain that the bootstrap CSS files are heavy and take time to load but these claims are made by lazy people. You don't have to keep the complete bootstrap.css in your website. You always have the option to remove the styles for components that you do not need for your website. For example, if you are only using basic components like forms and buttons then you can remove other components like accordions etc from the main CSS file. To start dabbling in bootstrap you can download the basic templates and components from getbootstrap site and let the magic happen.