/* right */
.expandmenu-side {
  height: 18px;
  right: 20px;
  top: 20px;
}

#expandmenu-checkbox:checked + .expandmenu-side {
  position: fixed;
  width: 100%;
  height: 100%;
  right: 0;
  top: 0;
  /*margin: 0 auto;*/
}