To HTML Content Category Embedded

Html elements object, input, and em

object element Defines an object embedded in the document, input element Defines an input element, such as a text field control or button, within a form, em element Specifies that the enclosed text should be emphasized. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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object object and input, object, input, and em

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