concept-grid.html

<div class="row">
   <div class="col-xs-1 blue">
      Column 1
   </div>
   <div class="col-xs-1 red">
      Column 2
   </div>
   <div class="col-xs-1 blue">
      Column 3
   </div>
   <div class="col-xs-1 red">
      Column 4
   </div>
   <div class="col-xs-1 blue">
      Column 5
   </div>
   <div class="col-xs-1 red">
      Column 6
   </div>
   <div class="col-xs-1 blue">
      Column 7
   </div>
   <div class="col-xs-1 red">
      Column 8
   </div>
   <div class="col-xs-1 blue">
       Column 9
   </div>
   <div class="col-xs-1 red">
       Column 10
   </div>
   <div class="col-xs-1 blue">
       Column 11
   </div>
   <div class="col-xs-1 red">
       Column 12
   </div>
</div>