```css
/* Additional styling for presentation elements */
.columns {
  display: flex;
  gap: 20px;
}

.column {
  flex: 1;
}

.stat-box {
  background: #f8f9fa;
  border: 2px solid #3498db;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  margin: 10px 0;
}