A block-level element displays a blank line before its contents and a blank line after its contents.
A block-level element is normally as wide as the page.
The Paragraph <p> and Preformatted <pre> elements are examples of block-level elements.
Inline elements start immediately after the previous element and only use as much space as the element contents.
Inline elements cannot contain block-level elements.
The Strong <strong> element is an example of an inline element.
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