.right-menu {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  width: 28ch;

  padding: 0.333em;
  padding-bottom: 1em;
  
  text-align: left;

  user-select: none;
  overflow-x: hidden;
  overflow-y: auto;

  .showhide {
    display: none;
  }
}

@media screen and (max-width: 800px) {
  .right-menu {
    display: none;
  }
}