EM is for emphasis

em

The "em" element is for emphasizing a word or phrase within a sentence, suggesting that the reader should use an emphatic tone of voice.

Typically this is done typographically by using an italicized variant of the font, but other CSS styling may serve the purpose better.

Here emphasis is not the same as italicized as used with the "i" element.

Examples

When replacing the tire, be sure to properly clean the <<em inside>>
of any foreign matter before seating it on the rim.
The em element used for emphasis

See also

b
The "b" element is for stylistically treating a word or phrase as being somehow different from the rest, by using a heavier font weight than the surrounding text.
i
The "i" element is for stylistically treating a word or phrase as being somehow different from the rest, by using an italicized variant of the font.
strong
The "strong" element is for indicating that a word or phrase within a sentence has strong importance, urgency or seriousness.

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