@import url("https://fonts.googleapis.com/css2?family=Exo:ital,wght@1,494&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  background-color: #9fd5ec;
}

.container {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  /* border: 2px solid lightgrey; */
  border-radius: 9px;
  background: #508991;
  box-shadow: 7px 7px 12px #435c72, -7px -7px 12px #ebffff;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  align-items: center;
}
.inner {
  margin-top: 0.4%;
  margin-left: 0.3%;
  background-color: transparent;
  width: 23%;
  height: 21%;
  border: 1px solid #f1f1f1;
  perspective: 1000px;
}
.cards {
  border-radius: 9px;
  background: #9fd5ec;
  box-shadow: 1px 1px 3px #435c72, -1px -1px 3px #ebffff;
  color: white;
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}
.inner:hover .cards {
  cursor: pointer;
}
.cardFront,
.cardBack {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}
.cardFront {
  background-color: #9fd5ec;
  color: black;
  background-image: url(imgs/10.svg);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 30%;
}
.cardBack {
  background-color: white;
  color: white;
  transform: rotateY(180deg);
}
.scoreContainer {
  /* border: 2px solid black; */
  height: 150px;
  font-size: 30px;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  font-family: "Exo", sans-serif;
  font-weight: 500;
}
.btnContainer {
  /* border: 2px solid red; */
  display: flex;
  justify-content: center;
  height: 50px;
  margin-top: 450px;
}
button {
  transform: translate(-10%);
  height: 100%;
  width: 150%;
  font-family: "Exo", sans-serif;
  font-size: 24px;
  border: none;
  background-color: #508991;
  color: white;
  border-radius: 5px;
}
button:hover {
  cursor: pointer;
}