Summary
Well done—you now know and understand the essential elements needed to create a fully responsive web page. However, as we have just discovered, there are plenty of places where things could be improved.
But that's fine. We don't just want the ability to make competent responsive web designs, we want to be able to create "best of breed" experiences. And as you're here, investing your time in the betterment of websites everywhere, I know you're up to the challenge. So let's press on.
In the next chapter, Chapter 2, Writing HTML Markup, we are going to take a deep dive into HTML5 markup. HTML is the very skeleton of any web page or application, the bedrock on which to build anything meaningful, the oxygen a website breathes, the... OK, I'm out of analogies—suffice it to say, HTML is pretty important, so let's press on and get stuck in.