#ct-3-p {
  background-color: white;
  margin: 0;
  padding: 0;
  border: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

._container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  transition: -webkit-transform cubic-bezier(0, 0, 0.3, 1) 1s;
  transition: transform cubic-bezier(0, 0, 0.3, 1) 1s;
  transition: transform cubic-bezier(0, 0, 0.3, 1) 1s, -webkit-transform cubic-bezier(0, 0, 0.3, 1) 1s;
}

.skew {
  -webkit-transform: skew(-60deg, 30deg);
          transform: skew(-60deg, 30deg);
}

._row {
  display: flex;
  flex-direction: row;
  margin-bottom: 1px;
}

.card {
  background-color: transparent;
  background-repeat: no-repeat;
  background-size: cover;
  width: 100px;
  height: 100px;
  flex-grow: 1;
  margin-left: 0.5px;
  margin-right: 0.5px;
  cursor: pointer;
  transition: background-color cubic-bezier(0, 0, 0.3, 1) 0.1s, -webkit-transform 0.1s cubic-bezier(0, 0, 0.3, 1);
  transition: transform 0.1s cubic-bezier(0, 0, 0.3, 1), background-color cubic-bezier(0, 0, 0.3, 1) 0.1s;
  transition: transform 0.1s cubic-bezier(0, 0, 0.3, 1), background-color cubic-bezier(0, 0, 0.3, 1) 0.1s, -webkit-transform 0.1s cubic-bezier(0, 0, 0.3, 1);
  filter: drop-shadow(30px 10px 4px #afafaf);
}

.card:hover {
  -webkit-transform: translate(calc( 5px * -2), calc( 5px * -1));
          transform: translate(calc( 5px * -2), calc( 5px * -1));
  background-color: #2980b9;
}
input[type="checkbox"]:checked + .card, .card:active {
  -webkit-transform: translate(calc( 2px * -2), calc( 2px * -1));
          transform: translate(calc( 2px * -2), calc( 2px * -1));
  background-color: #27ae60;
}

input[type="checkbox"] {
  display: none;
}

.info {
  color: rgba(255, 255, 255, 0.2);
  font-family: monospace;
  position: absolute;
  top: 10px;
  left: 10px;
  cursor: pointer;
}

.hidden {
  display: block;
}

@media screen and (max-width: 500px) {
  ._row:first-child > .card:last-child {
    display: none;
  }

  ._row:last-child > .card:last-child {
    display: none;
  }

	.card {
		width: 60px;
		height: 50px;
	}
}