JSFiddle - React, Tailwind, and code Playground

HTML

<div class="thumbnail">
  <img src="http://i59.tinypic.com/10cvw8y.jpg" class="template-img">
  <aside tab-index="1" class="hover">
    Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
    <button class="button" onclick="alert('wow')">CLICK ME</button>
  </aside>
</div>

CSS

.thumbnail {
  position: relative;
  overflow: hidden;
}

.template-img {
  width: 100%;
  height: 100%;
}

.template-img:hover ~ .hover {
  transform: translateX(0);
}

.template-img:focus {
  pointer-events: none;
}

.template-img:focus ~ .hover {
  transform: translateX(0);
  transition: none;
}

.hover {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  padding-top: 15%;
  transform: translateX(-100%);
  transition: transform .4s ease-out;
  pointer-events: none;
  background: rgba(255, 0, 0, 0.4);;
  z-index: 10;
}

.button {
    pointer-events: auto;
}