<div class="interstellar">
  <img src="http://lukedowding.com/img/interstellar1.jpg" />
  <img class="hover" src="http://lukedowding.com/img/interstellar2.jpg" />
  <div class="hoverme">HOVER ME</div>
</div>
body{
  background: #111;
  font-family: sans-serif;
}
.interstellar {
  position: relative;
  height: 250px;
  width: 100%;
  margin: 0 auto;
  img {
    position:absolute;
    min-width: 100%;
    left: 0;
    opacity: 1;
    -webkit-transition: opacity 2s ease-out;
    -moz-transition: opacity 2s ease-out;
    -o-transition: opacity 2s ease-out;
    transition: opacity 2s ease-out;
  }
  .top{
    opacity: 1;
  }
}
.hoverme{
  position: absolute;
  background-color: #000;
  padding: 10px 20px;
  z-index: 2;
  cursor: none;
  color: #fff;
  font-size: 0.8rem;
  transition: 1s;
  width: 70px;
  left: 0;
  right: 0;
  top: 50%;
  margin: 0 auto;
  &:hover{
    background-color: #222;
    transition: 1s;
  }
}
.fadeout{
  opacity: 0 !important;
}

View Compiled
$('.hoverme').hover(
     function(){ $('.hover').addClass('fadeout') },
     function(){ $('.hover').removeClass('fadeout') }
)

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. //cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js