Customizing scroll speed

Great! Our navbar items are now automatically updated based on the user's scroll position. Easy, huh? But we're not quite done yet. The transition between sections actually feels quite rough. The page literally jumps from one section to another. Such a jerky movement is not very pleasing. Instead, we should improve the user experience of our website by making this transition between sections smoother. We can quite easily accomplish this by customizing the scroll speed of our page by using jQuery. The first step in this task involves automating the scroll, that is, forcing a scroll event to a target on the page using jQuery, without the user needing to actually perform a scroll operation. The second step involves defining the speed of such a scroll operation.

As it turns out, the developers behind jQuery already thought about both of these steps by providing us with the animate   method. As its name implies, this method allows us to apply an animation to a given set...