body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}

header {
  background: #203040;
  color: white;
  text-align: center;
  padding: 1em;
}

main {
  padding: 2em;
  max-width: 800px;
  margin: auto;
}

.art-recreation {
  display: flex;
  justify-content: center;
  margin-top: 2em;
}

.grid {
  display: grid;
  grid-template-columns: 150px 150px;
  grid-template-rows: 150px 150px;
  gap: 5px;
}

.cell {
  width: 150px;
  height: 150px;
}

.red {
  background-color: #e10600;
}

.blue {
  background-color: #002bff;
}