code: func (p *Pages) Draw(screen tcell.Screen) {
  	p.Box.Draw(screen)
  	for _, page := range p.pages {
  		if !page.Visible {
  			continue
  		}
  		if page.Resize {
  			x, y, width, height := p.GetInnerRect()
  			page.Item.SetRect(x, y, width, height)
  		}
  		page.Item.Draw(screen)
  	}
  }
docs: // Draw draws this primitive onto the screen.