.scrollup {
  z-index: 3;
  width: 40px;
  height: 40px;
  opacity: 0.3;
  position: fixed;
  bottom: 150px;
  right: 5%;
  display: none;
  text-indent: -9999px;
  background: url(../images/icon-top.png) no-repeat;
}

.pageback {
  width: 40px;
  height: 40px;
  opacity: 0.3;
  position: fixed;
  display: none;
  text-indent: -9999px;
  background: url(../images/icon-top.png) no-repeat;
  right: calc(5% + 64px);
  bottom: 150px;
  transform: rotate(
    -90deg);
}