.scroll_el.show .scroll_property.back_to_position {
  opacity: 1;
}

.scroll_el.show .scroll_property.to_top {
  -webkit-transform: translateY(0);
          transform: translateY(0);
}

.scroll_property {
  -webkit-transition-delay: .2s;
          transition-delay: .2s;
  -webkit-transition-duration: .7s;
          transition-duration: .7s;
}

.scroll_property.back_to_position {
  opacity: 0;
}

.scroll_property.to_top {
  -webkit-transform: translateY(-6rem);
          transform: translateY(-6rem);
}

.scroll_property.show.back_to_position {
  opacity: 1;
}

.scroll_property.show.to_top {
  -webkit-transform: translateY(0);
          transform: translateY(0);
}