body {
  background-color: #000;
}

#container {
  display: grid;
  grid-template-columns: repeat(50, 20px);
  grid-template-rows: repeat(30, 20px);
}

.cell {
  width: 20px;
  height: 20px;
  border: 1px solid #ccc;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 12px;
  color: #fff; /* Color de texto blanco */
}

button {
  margin-top: 10px;
}