Animated Image Hover Overlay with Image Scale

Pure Html5 and CSS/CSS3 technique to create an animated caption overlay over the image with subtle image scale effects when mouse hover.

How to use it:

Insert an image with text caption using Html5 figure and figcaption tags.

<figure>
  <img src="demo.jpg" alt="Thumb" width="400" height="300">
  <figcaption><div>Thumbnail Caption</div></figcaption>
</figure>

The required CSS/CSS3 rules to create an animated caption hover overlay and the image scale effects.

figure{
  width: 400px;
  height: 300px;
  overflow: hidden;
  position: relative;
  display: inline-block;
  vertical-align: top;
  border: 5px solid #fff;
  box-shadow: 0 0 5px #ddd;
  margin: 1em;
}
figcaption{
  position: absolute;
  left: 0; right: 0;
  top: 0; bottom: 0;
  text-align: center;
  font-weight: bold;
  width: 100%;
  height: 100%;
  display: table;
}
figcaption div{
  display: table-cell;
  vertical-align: middle;
  position: relative;
  top: 20px;
  opacity: 0;
  color: #2c3e50;
  text-transform: uppercase;
}
figcaption div:after{
  position: absolute;
  content: "";
  left: 0; right: 0;
  bottom: 40%;
  text-align: center;
  margin: auto;
  width: 0%;
  height: 2px;
  background: #2c3e50;
}
figure img{
  -webkit-transition: all 0.5s linear;
          transition: all 0.5s linear;
  -webkit-transform: scale3d(1, 1, 1);
          transform: scale3d(1, 1, 1);
}
figure:hover figcaption{
 background: rgba(255,255,255,0.3);
}
figcaption:hover div{
  opacity: 1;
  top: 0;
}
figcaption:hover div:after{
  width: 50%;
}
figure:hover img{
  -webkit-transform: scale3d(1.2, 1.2, 1);
          transform: scale3d(1.2, 1.2, 1);
}