CSS code: Do you use one over the other? In examples for both elements, they show two different use-cas… within the page: Tip: You can learn much more about CSS in our CSS Tutorial. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. All HTML character codes of text fonts and symbols from � to ￿ . A The id attribute specifies a unique id for an HTML element (the value must be unique within the HTML document). The id attribute specifies a unique id bookmark. Breadcrumbs are another piece of content that should be wrapped in a