body {
display: flex;
flex-direction: column;
align-items: center;
  text-align: center;
  font-family: sans-serif;
  background: #eef;
}

#farm {
  display: grid;
  grid-template-columns: repeat(5, 80px);
  grid-template-rows: repeat(5, 80px);
  gap: 5px;
  margin: 20px auto;
}

.cell {
  width: 80px;
  height: 80px;
  border: 2px solid #333;
  background-color: #a3d9a5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  cursor: pointer;
  user-select: none;
}

.seedling { background-color: #7ec850; }
.growing { background-color: #55b648; }
.mature { background-color: #2e7d32; }