.span11 {
  width: 860px;
}

.span10 {
  width: 780px;
}

.span9 {
  width: 700px;
}

.span8 {
  width: 620px;
}

.span7 {
  width: 540px;
}

.span6 {
  width: 460px;
}

.span5 {
  width: 380px;
}