.read-progress-wrapper {
  position: fixed;
  width: 100%;
  background: rgba(255,255,255,.3);
  z-index: 9999;
  pointer-events: none;
}
.read-progress-wrapper .read-progress-bar {
  width: 100%;
  height: 6px;
  position: relative;
  background: 0 0;
}
.read-progress-wrapper .read-progress-bar .read-progress {
  left: 0;
  bottom: 0;
  top: 0;
  width: 0%;
  position: absolute;
  transition: width .1s;
  border-radius: 0 2px 2px 0;
}