.row:before,
.row:after {
  display: table;
  line-height: 0;
  content: "";
}
.row:after {
  clear: both;
}
[class*="span"] {
  float: left;
  min-height: 1px;
  margin-left: 3%;
}

.span12 {
  width: 97%;
}
.span12 .span12{
	margin-left: 0px;
}
.span11 {
  width: 89%;
}
.span10 {
  width: 80%;
}
.span9 {
  width: 72%;
}
.span8 {
  width: 64%;
}
.span7 {
  width: 55%;
}
.span6 {
  width: 46%;
}
.span5 {
  width: 38%;
}
.span4 {
  width: 30%;
}