<div class="col-md-4<?php echo $class; ?> mashed">
                <?php the_content(); ?>
                    <div class ="hoverimage">
                        <div class="text">TEST SANYA HUI TEST</div>
                    </div>
                </div>

//////////////////////////////////// css /////////////////////

/* some shitty ass hover */
.mashed img {
  opacity: 1;
  display: block;
  transition: .5s ease;
  backface-visibility: hidden;
  }

.hoverimage {
  transition: .5s ease;
  opacity: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%)
}

.mashed:hover img {
  opacity: 0.3;
}

.mashed:hover .text {
  opacity: 1;
}

.text {
  background-color: #4CAF50;
  color: white;
  font-size: 16px;
  padding: 16px 32px;
}