body {
  background: linear-gradient(to top, white 0%, azure 100%);
  color: #008ccf;
  font-family: "Ruda", sans-serif;
  margin: 0 auto;
  max-width: 1100px;
  /* width: 100%;
  min-height: 100vh; */
}

h1 {
  border-radius: 20px;
  box-shadow: 5px 5px 15px 3px rgba(26, 100, 214, 0.2);
  color: #008ccf;
  padding: 15px;
  text-align: center;
}

img {
  padding: 10px;
}

button.new-game-button {
  background: transparent;
  color: #008ccf;
  font-size: 16px;

  border: 2px solid #008ccf;
  border-radius: 20px;
  box-shadow: 5px 5px 15px 3px rgba(26, 100, 214, 0.2);

  margin: 30px auto;
  padding: 10px;
  display: block;
  transition: all 200ms ease-in-out;
}

button.new-game-button:hover {
  color: #008ccf;
  background: linear-gradient(to top, azure 0%, #008ccf 100%);
  cursor: pointer;
}

/* divs: */

.card__container {
  margin: 0 auto;
  width: 95%;

  display: flex;
  flex-flow: row wrap;
  justify-content: center;
  align-items: center;
  align-content: center;
}

.card {
  background-color: transparent;
  border-radius: 20px;
  margin: 25px 25px;
  width: 200px;
  height: 200px;
  perspective: 1000px;
}

.card__inner {
  background-color: white;
  border-radius: 20px;
  width: 100%;
  height: 100%;
  transition: transform 1s;
  transform-style: preserve-3d;
  cursor: pointer;
  position: relative;
}

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

.card__face {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  overflow: hidden;
  border-radius: 20px;
  box-shadow: 0px 0px 15px 3px rgba(26, 100, 214, 0.2);
}

.card__face--front {
  background-image: url(./img/magen-david-260px.jpg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;

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

.card__face--back {
  background-color: white;
  transform: rotateY(180deg);
}

.is-hidden {
  visibility: hidden;
}