p := mpb.New(
		// override default (80) width
		mpb.WithWidth(100),
		// override default "[=>-]" format
		mpb.WithFormat("╢▌▌░╟"),
		// override default 120ms refresh rate
		mpb.WithRefreshRate(100*time.Millisecond),
	)

	total := 100
	name := "Single Bar:"
	// Add a bar
	// You're not limited to just a single bar, add as many as you need
	bar := p.AddBar(int64(total),
		// Prepending decorators
		mpb.PrependDecorators(
			// StaticName decorator with minWidth and no extra config
			// If you need to change name while rendering, use DynamicName
			decor.StaticName(name, len(name), 0),
			// ETA decorator with minWidth and no extra config
			decor.ETA(4, 0),
		),
		// Appending decorators
		mpb.AppendDecorators(
			// Percentage decorator with minWidth and no extra config
			decor.Percentage(5, 0),
		),
	)

	max := 200 * time.Millisecond
	for i := 0; i < total; i++ {
		time.Sleep(time.Duration(rand.Intn(10)+1) * max / 10)
		bar.Increment()
	}
	// Wait for all bars to complete
	p.Wait()

	var wg sync.WaitGroup
	p := mpb.New(mpb.WithWaitGroup(&wg))
	total := 100
	numBars := 3
	wg.Add(numBars)

	for i := 0; i < numBars; i++ {
		name := fmt.Sprintf("Bar#%d:", i)
		bar := p.AddBar(int64(total),
			mpb.PrependDecorators(
				decor.StaticName(name, 0, 0),
				// DSyncSpace is shortcut for DwidthSync|DextraSpace
				// means sync the width of respective decorator's column
				// and prepend one extra space.
				decor.Percentage(3, decor.DSyncSpace),
			),
			mpb.AppendDecorators(
				decor.ETA(3, 0),
			),
		)
		go func() {
			defer wg.Done()
			max := 200 * time.Millisecond
			for i := 0; i < total; i++ {
		        time.Sleep(time.Duration(rand.Intn(10)+1) * max / 10)
				bar.Increment()
			}
		}()
	}
	// Wait for all bars to complete
	p.Wait()