The purpose of the indenting is for human developers, not for the browsers. Keep in mind that the websites we make in this course are fairly simple, but on a business website they quickly become much more complex. It isn't uncommon to have ten or more ten or more divs nested in the HTML of a web page. If you miss closing just one of those divs, you may have a display problem that is hard to track down. (You could call it the " hunting" game, except it isn't a very fun game. ) For that reason, some developers put a comment next to each closed div, like this: . You will find that indenting is VERY important to other developers and potential employers. Before you show any code to an employer or ask for help from another developer, make sure you have your code properly indented. On the Pacific Trails lab, you can start to see why you need the indenting. One key thing to show in the indenting is that the and sections are inside of the . It's important to understand why it needs to be indented that way. You are trying to show other developers (and yourself) that those items are INSIDE of the wrapper. For the purposes of the screenshot below I delete the content of the main and footer sections. As you can see, there is a little white line in the text editor showing the where the starts and ends.