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<!DOCTYPE html>
<html>
<head>
<style>
.container {
  position: relative;
  width: 50%;
}
.image {
  opacity: 1;
  display: block;
  width: 100%;
  height: auto;
  transition: .5s ease;
  backface-visibility: hidden;
}
.middle {
  transition: .5s ease;
  opacity: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%)
}
.container:hover .image {
  opacity: 0.3;
}
.container:hover .middle {
  opacity: 1;
}
.text {
  background-color: #4CAF50;
  color: white;
  font-size: 16px;
  padding: 16px 32px;
}
</style>
</head>
<body>