.pro-effects-progress-line-wrapper{
  position:relative;
  display:block;
  overflow:hidden;
  width:100%;
}

.pro-effects-progress-line-bar{
  display:block;
  width:100%;
  height:4px;
  background-color:#000;
  transform-origin:left center;
  transform:scaleX(0);
  will-change:transform;
}

.pro-effects-progress-line-wrapper.is-animating .pro-effects-progress-line-bar{
  transform:scaleX(1);
}