<div class="container"> <!--Or span12 since the width are same-->
  <div class="row">
    <div class="span1" style="background:black;">Dummy</div>
    <div class="span10" style="background:blue;">The Real One</div>
    <div class="span1" style="background:black;">Dummy</div>
  </div>
</div>

<div class="span10 offset1">