.container {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* Card */
.card {
  width: 120px;
  height: 120px;
  perspective: 1000px;
  cursor: pointer;
}

.card-inner {
  width: 100%;
  height: 100%;
  position: relative;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

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

/* Conteúdos */
.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  padding: 15px;
  box-sizing: border-box;
  backface-visibility: hidden;
  border-radius: 12px;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* Frente */
.card-front {
  background: #525252;
  color: #fff;
}

/* Verso */
.card-back {
  background: #525252;
  color: #fff;
  transform: rotateY(180deg);
}





.bb a {color:white;}
.bb {}
.bb:hover {background:red;}








@keyframes tipsy {
  0 {
    transform: translateX(-50%) translateY(-50%) rotate(0deg);
  }
  100% {
    transform: translateX(-50%) translateY(-50%) rotate(360deg);
  }
}

body {
  font-family: helvetica, arial, sans-serif;
  background-color: #2e2e31;
}

.a {
  color: #fffbf1;
  text-shadow: 0 20px 25px #2e2e31, 0 40px 60px #2e2e31;
  font-size: 50px;
  font-weight: bold;
  text-decoration: none;
  letter-spacing: -3px;
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translateX(-50%) translateY(-50%);
}

.a:before,
.a:after {
  content: '';
  padding: .9em .4em;
  position: absolute;
  left: 50%;
  width: 100%;
  top: 50%;
  display: block;
  border: 15px solid red;
  transform: translateX(-50%) translateY(-50%) rotate(0deg);
  animation: 10s infinite alternate ease-in-out tipsy;
}

.a:before {
  border-color: #d9524a #d9524a rgba(0, 0, 0, 0) rgba(0, 0, 0, 0);
  z-index: -1;
}

.a:after {
  border-color: rgba(0, 0, 0, 0) rgba(0, 0, 0, 0) #d9524a #d9524a;
  box-shadow: 25px 25px 25px rgba(46, 46, 49, .8);
}



.box:hover {cursor:pointer;}



@media screen and (max-width: 730px){
 .card {width:68vw !important; height:68vw !important; float:none !important; margin:5px auto !important;}
}