body {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  background-color: #999999;
}
main {
  flex: 1 0 auto;
  background-repeat: no-repeat, repeat;
}

.center {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 50%;
}

.flip-card {
  background-color: transparent;
  width: 300px;
  height: 300px;
  perspective: 1000px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
  box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

.flip-card-front {
  background-color: #bbb;
  color: black;
}

.flip-card-back {
  background-color: #2980b9;
  color: white;
  transform: rotateY(180deg);
}

/**/
/*
 * Preparing stage
*/
html{
  padding: 0;
  margin: 0;
  height: 100%;
}

/*
 * Start
*/
.glassBox {
  width: 100%;
  height: 400px;
  max-width: 300px;
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.4);
  -webkit-backdrop-filter: blur(2px);
          backdrop-filter: blur(2px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-right-color: rgba(255, 255, 255, 0.1);
  border-bottom-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 30px rgba(0, 0, 0, 0.1);
  padding: 15px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.glassBox, .glassBox * {
  box-sizing: border-box;
  transition: 400ms;
}
.glassBox__imgBox img {
  display: block;
  width: 100%;
  height: auto;
}
.glassBox__title {
  text-align: center;
  margin-top: 15px;
  color: #FFF;
  font-size: 20px;
  font-weight: 400;
  font-family: "Lato";
}
.glassBox__content {
  position: absolute;
  right: 15px;
  bottom: 15px;
  left: 15px;
  text-align: center;
  color: #FFF;
  font-size: 14px;
  font-family: "Lato";
  letter-spacing: 0.1em;
  opacity: 0;
}
.glassBox:hover .glassBox__imgBox {
  transform: translateY(-50px);
}
.glassBox:hover .glassBox__imgBox img {
  transform: translate(-20px, -40px) rotate(-15deg) scale(1.4);
}