//to keep the hoverbox relative to parent
a[href^=http]:hover {
  position: relative;
}

a[href^=http]:hover:after {
  content: attr(href);
  position: absolute;
  top: 1em;
  left: 0;
  background-color: black;
  color: white;
  padding: 3px 5px;
  line-height: 1;
}


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