card.css

:root {
  --card: 100%;
  --aspect-ratio-constant: 14.3216783vw
    /* Aspect ratio according to the grid area for my cards */;
  --inactive: #b3b3b3;
}

.deck,
.discarded {
  display: grid;
  filter: drop-shadow(0px 0px 6px rgba(0, 0, 0, 0.4));
  margin-left: 5%;
  width: 40%;
  height: 100%;
  transition: 0.2s;
  border-radius: 10px;
  /* border: 3px dashed var(--inactive); */
}

.discarded {
  border: 3px dashed var(--inactive);
  filter: none;
  position: relative;
}

.discarded::after,
.discarded::before {
  position: absolute;
  top: 0;
  left: 0;
  content: "DISCARD PILE \A (click to see all discarded cards)";
  white-space: pre-wrap;
  font-size: 1.5rem;
  font-family: "LHR Firehouse";
  color: #00000000;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  text-align: center;
  background-color: #b3b3b300;
  transition: 0.2s;
}

.discarded::before {
  content: "DISCARD PILE";
  color: var(--inactive);
  font-size: 2rem;
  text-align: center;
  width: 10vw;
  justify-content: center;
}

.discarded:hover::after {
  cursor: pointer;
  background-color: #b3b3b380;
  color: #000000;
}

.card {
  width: var(--card);
  position: relative;
  perspective: 1000px;
  /* filter: drop-shadow(0px 0px 6px black); */
  transition: 0.2s;
  height: auto;
  border-radius: 40px;
  grid-area: 1 / 1 / 2 / 2;
}

.card__inner {
  width: 100%;
  height: auto;
  transform-style: preserve-3d;
  transition: transform 0.5s;
  display: grid;
  position: relative;
  border-radius: 20px;
}
.card__face {
  width: 100%;
  /* position: absolute; */
  top: 0;
  left: 0;
  transition: transform 0.5s;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: 10px;
  overflow: hidden;
  display: block;
  grid-area: 1 / 1 / 2 / 2;
}

.card__face--front {
  z-index: 0;
  grid-area: 1 / 1 / 2 / 2;
  transform: rotateY(180deg);
}

.card__face--back {
  z-index: 1;
}

.flipped .card__inner {
  transform: rotateY(180deg);
}

.draw_storm,
.draw_gear {
  width: 40%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background: #fdce85;
  margin-left: 5%;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: red;
  font-size: 2rem;
  border-radius: 10px;
  font-family: "LHR Firehouse";
  opacity: 0;
  transition: 0.2s;
  cursor: grab;
}

.draw_gear {
  background: #b3e5fc;
  color: blue;
}

.draw_storm:hover,
.draw_gear:hover {
  opacity: 0.6;
}

#tray {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: 0.2s;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  filter: none;
}

#tray__cards {
  width: 60%;
  height: 40%;
  background-color: white;
  display: block;
  align-items: center;
  padding: 15px 12px 0 12px;
  overflow-x: scroll;
  white-space: nowrap;
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
  background: none;
}
::-webkit-scrollbar-thumb {
  background-color: #00000020;
  border-radius: 10px;
}

::-webkit-scrollbar-track {
  background: #f4f4f400;
  width: 10px;
}

#tray__cards:hover::-webkit-scrollbar-track {
  background: #f4f4f4;
}

#tray__cards:hover::-webkit-scrollbar-thumb {
  background-color: #000000;
}

.hidden_tray {
  transform: scale(0);
  backdrop-filter: blur(0px);
  opacity: 0;
  filter: blur(10px);
}

#tray__cards .card {
  width: 20%;
  margin: 10px;
  display: inline-block;
}