.row {
    margin-left: -20px;
    *zoom: 1;
  }
  .row:before,
  .row:after {
    display: table;
    content: "";
    line-height: 0;
  }
  .row:after {
    clear: both;
  }
  [class*="span"] {
    float: left;
    min-height: 1px;
    margin-left: 20px;
  }
  .container,
  .navbar-static-top .container,
  .navbar-fixed-top .container,
  .navbar-fixed-bottom .container {
    width: 940px;
  }
  .span12 {
    width: 940px;
  }
  .span11 {
    width: 860px;
  }
  .span10 {
    width: 780px;
  }
  .span9 {
    width: 700px;
  }
  .span8 {
    width: 620px;
  }
  .span7 {
    width: 540px;
  }
  .span6 {
    width: 460px;
  }
  .span5 {
    width: 380px;
  }
  .span4 {
    width: 300px;
  }
  .span3 {
    width: 220px;
  }
  .span2 {
    width: 140px;
  }
  .span1 {
    width: 60px;
  }
  .offset12 {
    margin-left: 960px;
  }
  .offset11 {
    margin-left: 880px;
  }
  .offset10 {
    margin-left: 800px;
  }
  .offset9 {
    margin-left: 720px;
  }
  .offset8 {
    margin-left: 640px;
  }
  .offset7 {
    margin-left: 560px;
  }
  .offset6 {
    margin-left: 480px;
  }
  .offset5 {
    margin-left: 400px;
  }
  .offset4 {
    margin-left: 320px;
  }
  .offset3 {
    margin-left: 240px;
  }
  .offset2 {
    margin-left: 160px;
  }
  .offset1 {
    margin-left: 80px;
  }