Modern Web Design with HTML5, CSS3, and JavaScript - Setting up Breadcrumbs Using Bootstrap Components

The video tutorial explains breadcrumb navigation, a method to show users their location within a website's hierarchy. It covers how breadcrumbs are typically displayed at the top of a page and how they can be implemented using unordered lists. The tutorial also discusses the importance of accessibility through ARIA labels and demonstrates setting up a breadcrumb structure with multiple layers, including active states and hyperlink navigation.

Explain how to implement a breadcrumb with multiple levels.

What is the significance of the 'active' class in breadcrumb items?