body {
  font-family: 'Segoe UI', sans-serif;
  text-align: center;
  background-image: url(/cultura/img/fondo\ gato.jpg);
  background-size: 1600PX;
  color: #333;
}

#config button {
  padding: 10px 20px;
  margin: 10px;
  font-size: 1em;
  cursor: pointer;
}

#gato {
  display: grid;
  grid-template-columns: repeat(3, 100px);
  grid-gap: 5px;
  justify-content: center;
  margin: 20px auto;
}

.celda {
  width: 100px;
  height: 100px;
  background-color: #fff;
  border: 2px solid #333;
  font-size: 2.5em;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}