th.rotate {
  /* Something you can count on */
  height: 140px;
  white-space: nowrap;
}

th.rotate > div {
  transform: 
    /* Magic Numbers */
    translate(25px, 51px)
    /* 45 is really 360 - 45 */
    rotate(270deg);
  width: 30px;
}
th.rotate > div > span {
  /*border-bottom: 1px solid #ccc;*/
  padding: 10px 50px;
}