.faeline {
  position: absolute;
  pointer-events: none;
  background-color: rgba(255, 0, 0, 0.8);
  height: 2px;
  -webkit-transform-origin: 0 50%;
  transform-origin: 0 50%;
  opacity: 1;
  -webkit-transition: opacity 1s ease-out;
  transition: opacity 1s ease-out;
  will-change: opacity;
}