.span-1 {
  width: 120px;
}

.span-2 {
  width: 276px;
}

.span-3 {
  width: 432px;
}

.span-4 {
  width: 588px;
}

.span-5 {
  width: 744px;
}

.span-6 {
  width: 900px;
}

.offset-1 {
  margin-left: 156px;
}

.offset-2 {
  margin-left: 312px;
}

.offset-3 {
  margin-left: 468px;
}

.offset-4 {
  margin-left: 624px;
}

.offset-5 {
  margin-left: 780px;
}