a{
  position: relative;
  display: inline-block;
}

a[title]:hover::after {
  content: attr(title);
  position: absolute;
  top: -50px;
  text-align:left;
  left:-20px;
  width:400px;
  background-color:#ffffff;
  color:#808080;
  padding:10px;
  border:1px solid #ffaa00;
  z-index:1000;
}