<div class="qwe">
  <a href="">Пункт1</a>
  <a href="">Пункт2</a>
  <a href="">Пункт3</a>
  <a href="">Пункт4</a>
</div>

*{margin: 0; padding: 0;}
a{
  display: block;
  margin-bottom: 20px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
}

a:last-child{
  margin: 0px;
}

.qwe{ 
  position: fixed;
  top: 0;
  right: 8.33%;
}