Html elements hgroup, noscript, and iframe

hgroup element The HTML Headings Group Element (<hgroup>) represents the heading of a section, noscript element Specifies alternative content to display if a client browser does not support scripts, iframe element Defines an inline frame (ie a frame embedded in a document). These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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hgroup hgroup and noscript, hgroup, noscript, and iframe

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