:root {
  --timing: cubic-bezier(0.705, 0.785, 0.555, 1.3);
}
.ghost-scrollBar {
  position: fixed;
  top: 0;
  height: 7px;
  width: 0%;
  background: #000;
  -webkit-transition: width 200ms var(--timing);
  transition: width 200ms var(--timing);
  text-align: right;
  color: #fff;
  z-index: 10000;
}
.ghost-scrollBar span {
  position: absolute;
  font-size: 15px;
  right: 0;
  font-weight: 500;
  display: block;
  text-align: center;
  margin-top: 5px;
  color: #000;
  line-height: 1;
}
.ghost-scrollBar span:after {
  content: "%";
  font-size: 15px;
  bottom: 0px;
  opacity: 1;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=100)";
  color: #000;
}