p.pseudovertical PSEUDO-Vertical
p.vertical Vertical

.vertical {
  color: blue;
  border: 1px solid blue;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: rotate(180deg);
  }
.pseudovertical {
  color: red;
  border: 1px solid red;
  transform: rotate(-90deg);
}
.vertical::after,
.pseudovertical::after {
  content: '<';
  text-orientation: upright;
}