Which element is found at the bottom of the portal_normal layout?

The element found at the bottom of the portal_normal layout is indeed the footer. In web design, a footer typically serves as the section that appears at the very bottom of a page, and it's often used for information such as copyright notices, links to privacy policies, contact information, and may also include navigation links relevant to the entire site.

In the context of Liferay's portal_normal layout, the footer is integral to the overall structure, providing a designated space for the aforementioned content that is consistent across the website. It helps to maintain a clean and organized appearance, so users can easily find important information without cluttering the main content area.

The other elements mentioned serve distinct purposes: the header usually contains the main branding and navigation elements, the navigation section helps users to locate specific content quickly, and the content area is where the primary information of the page is displayed. Each of these plays a role in the user experience but does not occupy the bottom position in the layout like the footer does.