.blocker-element {
  /* Position the box over the target. */
  position: relative;
  z-index: 1;
  top: -30px;
  left: -5px;
  /* Size the box to cover the target. */
  width: 500px;
  height: 40px;
  opacity: 0.5;
  /* Make the blocker element visible. */
  background-color: black;
}
