.wcard {
  display:inline-block;
  position:relative;
}
.wcard div {
  display: none;
  position: absolute;
  bottom: 10px; left: 0px;
  background-color: rgba(0,0,0,.4);
  padding: 5px 5px 5px 10px;
  color: white
}
.wcard:hover div {
  display: block
}