The syntax and function of these tasks are explained in the videos. What these elements do is explained in the Build Structure (https://teamtreehouse.com/library/how-to-make-a-website/html-first/build-structure) video and the Create the Content Containers (https://teamtreehouse.com/library/how-to-make-a-website/html-first/create-the-content-containers) video. Did you follow along with the video using the workspace? Doing that should help make the tasks in the challenges seem more familiar.

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