*,
*:before,
*:after {
  box-sizing: border-box;
}

.card {
  color: inherit;
  cursor: pointer;
  /* width: calc(33% - 2rem);
  min-width: calc(33% - 2rem);*/
  height: 400px;
  /*min-height: 400px; */
  perspective: 1000px;
  margin: 1rem;
  position: relative;
  /* background-image: linear-gradient(
    to right bottom,
    #6c9bf3,
    #5885e6,
    #4670d9,
    #365aca,
    #2844bb,
    #2a3dad,
    #2b379f,
    #2b3191,
    #353881,
    #3d3f71,
    #444460,
    #49494e
  ); */
}
/* @media screen and (max-width: 800px) {
  .card {
    width: calc(50% - 2rem);
  }
}
@media screen and (max-width: 500px) {
  .card {
    width: 100%;
  }
} */
.front,
.back {
  display: flex;
  border-radius: 6px;
  background-position: center;
  background-size: cover;
  text-align: center;
  justify-content: center;
  align-items: center;
  /* position: absolute;
  height: 100%;
  width: 100%; */
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  transform-style: preserve-3d;
  transition: ease-in-out 600ms;
}
.front {
  background-size: cover;
  padding: 2rem;
  font-size: 1.618rem;
  font-weight: 600;
  color: rgb(141, 128, 128);
  overflow: hidden;
}

.back p {
  color:black;
  font-weight:bold;
}
.front:before {
  position: absolute;
  display: block;
  content: "";
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;

  opacity: 0.25;
  z-index: -1;
}
.card:hover .front {
  transform: rotateY(180deg);
}

/* .card:hover {
  background-image: linear-gradient(
    to right bottom,
    #49494e,
    #444460,
    #3d3f71,
    #353881,
    #2b3191,
    #2b379f,
    #2a3dad,
    #2844bb,
    #365aca,
    #4670d9,
    #5885e6,
    #6c9bf3
  );
} */

.card:nth-child(even):hover .front {
  transform: rotateY(-180deg);
}
.back {
  background: transparent;
  transform: rotateY(-180deg);
  padding: 0 2em;
}
.button {
  background: linear-gradient(135deg, #1a9be6, #1a57e6);
}
.back .button:before {
  box-shadow: 0 0 10px 10px rgba(26, 87, 230, 0.25);
  background-color: rgba(26, 87, 230, 0.25);
}
.card:hover .back {
  transform: rotateY(0deg);
}
.card:nth-child(even) .back {
  transform: rotateY(180deg);
}
.card:nth-child(even) .back .button {
  background: linear-gradient(135deg, #e61a80, #e61a3c);
}
.card:nth-child(even) .back .button:before {
  box-shadow: 0 0 10px 10px rgba(230, 26, 60, 0.25);
  background-color: rgba(230, 26, 60, 0.25);
}
.card:nth-child(even):hover .back {
  transform: rotateY(0deg);
}
.button {
  transform: translateZ(40px);
  cursor: pointer;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  font-weight: bold;
  color: #fff;
  padding: 0.5em 1em;
  border-radius: 100px;
  font: inherit;
  border: none;
  position: relative;
  transform-style: preserve-3d;
  transition: 300ms ease;
}
.button:before {
  transition: 300ms ease;
  position: absolute;
  display: block;
  content: "";
  transform: translateZ(-40px);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  height: calc(100% - 20px);
  width: calc(100% - 20px);
  border-radius: 100px;
  left: 10px;
  top: 16px;
}
.button:hover {
  transform: translateZ(55px);
}
.button:hover:before {
  transform: translateZ(-55px);
}
.button:active {
  transform: translateZ(20px);
}
.button:active:before {
  transform: translateZ(-20px);
  top: 12px;
}