JSFiddle - React, Tailwind, and code Playground

HTML

<div class="img-wrapper">
  <div class="hover-area">
    <div class="dropdown">
      YES YOU ARE!
    </div>  
  </div>
  <img src="https://i.imgur.com/brEGp2k.jpg">
</div>

CSS

.img-wrapper{
  width: 50%;
  position: relative;
}
.img-wrapper img{
  width: 100%;
}
.img-wrapper .hover-area{
  position: absolute;
  left: 40.35%;
  top: 28.30%;
  width: 17.54%;
  padding-top: 17.54%;
  background-color: rgba(0,0,0,0.5);
}
.img-wrapper .hover-area .dropdown{
  position: absolute;
   /* positions relative to .hover-area */
  left: 0px;
  top: 100%;
  width: 100px;
  background-color: #fff;
  display: none;
}
.img-wrapper .hover-area:hover .dropdown{
  display: block;
}