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This article introduces the knowledge of "how many grids are in bootstrap". In the operation of actual cases, many people will encounter such a dilemma. Then let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Bootstrap has 12 grids. Bootstrap provides a responsive, mobile device-first streaming grid system that automatically divides the page into up to 12 grids as the screen or viewport size increases.

Operating environment of this tutorial: Windows7 system, bootsrap3.3.7 version, DELL G3 computer

Bootstrap provides a responsive, mobile device-first streaming grid system (grip system). As the screen or viewport size increases, the system automatically divides the page into up to 12 grids, which can be divided into pages according to these 12 grids, which is very convenient for writing adaptive pages, only with .row class and .col class, .col-xs- ultra-small screen mobile phone (

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