<div class="parent" tabindex="0">
  Some stuff!
  <a href="https://google.com" class="deal-with-focus-with-javascript">Link here</a>
</div>

div {
  padding: 30px;
  background: #eee;
  opacity: 0;
}

div:hover,
div:focus,
div.focus {
  opacity: 1;
}
body {
  padding: 2rem;
}

var parent = document.querySelector(".parent");

parent.addEventListener("focusin", function() {
  parent.classList.add("focus");
});
parent.addEventListener("focusout", function() {
  parent.classList.remove("focus");
});