Html elements hr, hgroup, and embed

hr element Creates a horizontal line in the HTML document, hgroup element The HTML Headings Group Element (<hgroup>) represents the heading of a section, embed element Defines an object, such as a multimedia file, embedded in an HTML document. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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hr hr and hgroup, hr, hgroup, and embed

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