#offline_image {

top: 50%;
left: 50%;
position: absolute;
margin:-141px auto auto -212px;

}

.container {
    position: relative;
    width: 500px;
}

.image {
  opacity: 1;
  display: block;
  width: auto;
  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: #f7f7f7;
  color: #444444;
  font-size: 16px;
  padding: 16px 32px;
}