/*custom font - Montserrat*/
@import url(https://fonts.googleapis.com/css?family=Montserrat);
/*basic reset*/
* {
  margin: 0;
  padding: 0;
}
/*forcing the body to take 100% height*/
html,
body {
  min-height: 100%;
}
/*a nice BG*/
body {
  background: #544; /*fallback*/
  background: linear-gradient(#544, #565);
}

/*Thumbnail Background*/
.thumb {
  width: 400px;
  height: 300px;
  margin: 70px auto;
  perspective: 1000px;
  border-radius: 5px;
}
.thumb a {
  display: block;
  width: 100%;
  height: 100%;
  /*double layered BG for lighting effect*/
  background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)),
    url('assets/fon.png');
  /*disabling the translucent black bg on the main image*/
  background-size: 0, cover;
  /*3d space for children*/
  transform-style: preserve-3d;
  transition: all 0.5s;
}
.thumb:hover a {
  transform: rotateX(80deg);
  transform-origin: bottom;
}
/*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;
}
/*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;
  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(95deg) translateZ(-80px) scale(0.75);
  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(0) translateZ(-60px) scale(0.85);
}