body {
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 20px;
}

.chart {
  display: grid;
  grid-template-columns: repeat(5, 60px);
  gap: 10px;
  justify-content: center;
}

.cell {
  font-size: 24px;
  padding: 10px;
  border: 2px solid #444;
  cursor: pointer;
  border-radius: 8px;
  transition: 0.2s;
}

.cell:hover {
  background: #dde;
  transform: scale(1.2);
}