body {
  text-align: center;
  margin-top: 1rem;
  font-family: Arial, sans-serif;
}

#barcodeInput {
  padding: 0.5rem;
  font-size: 1rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  margin-bottom: 1rem;
}

#keypad {
  display: inline-block;
  margin-bottom: 1rem;
}

.keypad-row {
  display: flex;
  justify-content: center;
}

.keypad-btn {
  padding: 1rem 1.5rem; /* Increased padding for larger buttons */
  font-size: 1.2rem; /* Increased font size for better readability */
  margin: 0.5rem; /* Increased margin for more spacing between buttons */
  border: none;
  background-color: #f0f0f0;
  cursor: pointer;
  border-radius: 4px; /* Added border radius for rounded corners */
  width: 60px; /* Set a fixed width for consistent button sizes */
  height: 60px; /* Set a fixed height for consistent button sizes */
}

#barcode {
  margin-top: 1.5rem;
  border: 1px solid #ddd;
  padding: 1rem;
}