body, html {
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
}

:root {
  --jeopardy-blue: #060CE9;
  --font-color-main: #fff;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  min-height: 100vh;
}

.card-container {
  min-width: 90%;
  max-width: 30rem;
}

.card {
  display: flex;
  align-items: center;
  background-color: var(--jeopardy-blue);
  color: var(--font-color-main);
  border-radius: 1rem;
  text-align: center;
  text-transform: uppercase;
  padding: 1.5rem;
  transition: transform 1000ms;
  transform-style: preserve-3d;
}

.card-container:hover > .card {
  cursor: default;
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  min-width: 100%;
  backface-visibility: hidden;
  transform: rotateX(0deg); /* To make backface-visibility work on Firefox */
}

.card-back {
  transform: rotateY(-180deg) translate(100%, 0);
}