The Roots theme keeps its css, less, js, and img folders organized in its assets folder. Inside the assets folder, the structure is very similar to our structure from the Chapter 2, Bootstrappin' Your Portfolio, Portfolio site, as it is based, like ours, on the HTML5 Boilerplate.

We will soon replace Roots' assets with our own. But it's worth knowing how Roots works before we do so. Let's size up the contents of the Roots assets folder. The contents are shown in the following screenshot:

The Roots documentation (http://roots.io/roots-101/#theme-assets) explains how the files work together: