.side-butt {
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  transform: translateX(50%) rotateZ(-90deg);
  margin: 0;

  > div {
    transform: translateY(-50%);
  }
}

@media (max-width: 400px) {
  .side-butt {
    display: none !important;
  }
}