body {
  background-color: #237b9a;
  background-color: #235594; /* cyberblue */
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}
.container {
  max-width: 780px;
}

.bingo-card {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  grid-gap: 20px;
  padding: 20px;
  border-radius: 10px;
  /* box-shadow: 0 0 20px rgba(0, 0, 0, 0.2); */

}
h1 {
  margin-top: 20px;
  font-size: 22px;
  text-align: center;
  justify-content: center;
}
.rules {
  color: white;
  font-size: 14px;
}
.bingo-center {
  background-color: #ffad80;
}

.bingo-cell {
  width: calc( (75vh - 120px ) / 5 );
  height: calc( (75vh - 120px ) / 5 );
  max-width = 132px;
  max-height= 132px;

  background-color: #f1f1f1;
  display: flex;
  padding: 0.8rem;
  text-align: center;
  justify-content: center;
  align-items: center;
  /* background-color: #fff; */
  font-size: calc( min( (75vh - 120px ) / 32, 18px));
  font-weight: normal;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}