.container-memory{
   justify-content: center;
}

.card-image-back{
    
}

.flip-card {
  background-color: transparent;
  width: 100%;
  height: 150px;
  perspective: 1000px;
}

.flip-card img{
  object-fit: contain;
  object-position: center;
  width: 100px;
  max-width: 100%;
  border-radius: 10px;
}

.flip-card button{
  padding: 0px !important;
}

.flip-card-inner {
  position: relative;
  width: 100%;

  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

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

/*.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 {
  transform: rotateY(180deg);
}