Bootstrap includes a responsive, mobile first fluid grid system that appropriately scales up to 12 columns as the device or viewport size increases. It includes predefined classes for easy layout options, as well as powerful mixins for generating more semantic layouts.
Learn more: hhttp://getbootstrap.com/css/#grid
Introduction
Grid systems are used for creating page layouts through a series of rows and columns that house your content. Here’s how the Bootstrap grid system works:
- Rows must be placed within a
.container
(fixed-width) or.container-fluid
(full-width) for proper alignment and padding. - Use rows to create horizontal groups of columns.
- Content should be placed within columns, and only columns may be immediate children of rows.
- Predefined grid classes like
.row
and.col-xs-4
are available for quickly making grid layouts. Less mixins can also be used for more semantic layouts. - Columns create gutters (gaps between column content) via
padding
. That padding is offset in rows for the first and last column via negative margin on.row
s. - Grid columns are created by specifying the number of twelve available columns you wish to span. For example, three equal columns would use three
.col-xs-4
.
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-1
.col-md-8
.col-md-4
.col-md-4
.col-md-4
.col-md-4
.col-md-6
.col-md-6
.col-md-3
.col-md-3
.col-md-3
.col-md-3
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