Mi primera página con GRID Bootstrap
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-4 sm-3 md-2 lg-1
xs-12 sm-6 md-4 lg-2
xs-12 sm-6 md-4 lg-2
xs-12 sm-6 md-4 lg-2
xs-12 sm-6 md-4 lg-2
xs-12 sm-6 md-4 lg-2
xs-12 sm-6 md-4 lg-2
.col-xs-6 .col-sm-4
.col-xs-6 .col-sm-4