Grids

Note: Instead of <grid> you can use <row> alias.

<grid>
<col sm="6">.col-sm-6</col>
<col sm="6">.col-sm-6</col>
</grid>

.col-sm-6

<grid>
<col xs="12" sm="6" lg="8">.col-xs-12 .col-sm-6 .col-lg-8</col>
<col xs="6" lg="4">.col-xs-6 .col-lg-4</col>
</grid>

.col-xs-12 .col-sm-6 .col-lg-8

.col-xs-6 .col-lg-4