At this point, we've looked at CSS fundamentals, how to style text, and how to style and manipulate the boxes that your content sits inside. Now it's time to look at how to correctly arrange your boxes in relation to the viewport as well as to one another. We've covered the necessary prerequisites, so let's dive deep into CSS layout, looking at such various features as: different display settings, positioning, modern layout tools like flexbox and CSS grid, and some of the legacy techniques you might still want to know about.... They can also be used to detect other features of the environment...