.tile__headline a[href="./es7/"]::after {
  content: "Devices running Version 7.x Operating System";
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%);
  background-color: #333;
  color: #fff;
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 9999;
}

.tile__headline a[href="./es8/"]::after {
  content: "Devices running Version 8.x Operating System";
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%);
  background-color: #333;
  color: #fff;
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 9999;
}

.tile__headline a[href="./es7/"]:hover::after,
.tile__headline a[href="./es8/"]:hover::after {
  opacity: 1;
}