thumbnail-3d.css

/*Thumbnail Background*/
.thumb {
  width: 400px; height: 300px; margin: 70px auto;
  perspective: 1000px;
  -webkit-perspective: 1000px;
}
.thumb a {
  display: block; width: 100%; height: 100%;
  /*double layered BG for lighting effect*/
  /*disabling the translucent black bg on the main image*/
  background-size: cover;
  /*3d space for children*/
  transform-style: preserve-3d;
  -webkit-transform-style: preserve-3d;
  transition: all 0.5s;
  transform: rotateX(80deg); transform-origin: bottom;
  -webkit-transform: rotateX(80deg); -webkit-transform-origin: bottom;
}
.thumb:hover a { transform: rotateX(0deg);-webkit-transform: rotateX(0deg); }
/*bottom surface */
.thumb a:after {
  /*36px high element positioned at the bottom of the image*/
  content: ''; position: absolute; left: 0; bottom: 0; 
  width: 100%; height: 36px;
  /*inherit the main BG*/
  background: inherit; background-size: cover, cover;
  /*draw the BG bottom up*/
  background-position: bottom;
  /*rotate the surface 90deg on the bottom axis*/
  transform: rotateX(90deg); transform-origin: bottom;
  -webkit-transform: rotateX(90deg); -webkit-transform-origin: bottom;
}
/*label style*/
.thumb a span {
  color: white; text-transform: uppercase;
  position: absolute; top: 100%; left: 0; width: 100%;
  font: bold 12px/36px Montserrat; text-align: center;
  /*the rotation is a bit less than the bottom surface to avoid flickering*/
  transform: rotateX(-89.99deg); transform-origin: top;
  -webkit-transform: rotateX(-89.99deg); -webkit-transform-origin: top;
  z-index: 1;
}
/*shadow*/
.thumb a:before {
  content: ''; position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.5); 
  box-shadow: 0 0 100px 50px rgba(0, 0, 0, 0.5);
  transition: all 0.5s; 
  /*by default the shadow will be almost flat, very transparent, scaled down with a large blur*/
  opacity: 0.15;
  transform: rotateX(0deg) translateZ(-60px) scale(0.75);
  -webkit-transform: rotateX(0deg) translateZ(-60px) scale(0.75);
  transform-origin: bottom;
  -webkit-transform-origin: bottom;
}
.thumb:hover a:before {
  opacity: 1;
  /*blurred effect using box shadow as filter: blur is not supported in all browsers*/
  box-shadow: 0 0 25px 25px rgba(0, 0, 0, 0.5);
  /*pushing the shadow down and scaling it down to size*/
  transform: rotateX(95deg) translateZ(-80px) scale(0.85);
  -webkit-transform: rotateX(95deg) translateZ(-80px) scale(0.85);
}