#interactive-binary-cards-container {
  display: flex;
  flex-wrap: wrap;
  position: relative;
  margin: -1rem;
}

#interactive-binary-cards-container div.binary-card-container {
  flex: 0 1 auto;
  margin: 5px;
}
#interactive-binary-cards-container div.binary-card {
  width: 120px;
  height: 180px;
  position: relative;
  transform-style: preserve-3d;
  transform: perspective(25rem);
  transition: transform 0.6s;
  border: 1px solid #000000;
  text-align: center;
  box-shadow: 0 2px 5px 0 rgba(0, 0, 0, 0.16), 0 2px 10px 0 rgba(0, 0, 0, 0.12);
}

@media screen and (max-width: 750px) {
  #interactive-binary-cards-container div.binary-card {
    width: 16vw;
  }
}

#interactive-binary-cards-container div.binary-card canvas {
  margin: 0;
  padding: 0;
  width: 100%;
}
#interactive-binary-cards-container div.binary-card.flipped {
  transform: rotateY(180deg);
}
#interactive-binary-cards-container div.binary-card-side {
  backface-visibility: hidden;
  position: absolute;
  left: 0;
  top: 0;
  margin: 0;
  width: 100%;
  height: 100%;
}
#interactive-binary-cards-container div.binary-card-front {
  z-index: 2;
  background: white;
  font-size: 1.5rem;
  font-weight: bold;
}
#interactive-binary-cards-container div.small-text {
  font-size: 1rem;
}
#interactive-binary-cards-container div.binary-card-back {
  background: black;
  transform: rotateY(180deg) perspective(25rem);
}
#interactive-binary-cards button {
  height: 2rem;
  line-height: 2rem;
}
#interactive-binary-cards button#flip-to-black {
  background: black;
  color: white;
}
#interactive-binary-cards button#flip-to-white {
  background: white;
  color: black;
}

#binary-number {
  color: #26a69a;
}