Most HTML†4.0 elements permitted within the BODY are classified as either block-level elements or inline elements. Inline elements typically may only contain text and other inline elements. When rendered visually, inline elements do not usually begin on a new line.
The following are defined as inline elements in HTML†4.0:
The following elements may be used as either block-level elements or inline elements. If used as inline elements (e.g., within another inline element or a P), these elements should not contain any block-level elements.