The <em> element in HTML is used to emphasize text, typically by italicizing it, which helps to convey a particular meaning or stress on that portion of the text. <em> stands for "emphasis," and it is an inline element, meaning it does not start on a new line and only takes up as much width as necessary.
The <em> tag is primarily used to emphasize a word or phrase within a sentence. The emphasis typically implies that the text inside the <em> element has a slightly different meaning or importance than the surrounding text.
By default, browsers render the content inside the <em> tag in italics. However, this rendering is a visual representation, and the emphasis can be overridden with CSS. The use of <em> is more about semantics (meaning) than presentation.
You can nest <em> elements inside each other, which increases the level of emphasis. For instance, double emphasis might imply stronger stress or urgency.
<p>This is an <em>important</em> message.</p> <p>This is an <em><em>very</em> important</em> message.</p>
Screen readers use the <em> element to add vocal emphasis, which helps visually impaired users understand the context and meaning of the text. This is why using <em> for emphasis is more appropriate than using CSS styles directly for italicizing text, which wouldn't necessarily provide the same semantic meaning.
emphasize.html
<!DOCTYPE html> <html> <head> <title>Emphasize Example</title> </head> <body> <p>This is an <em>important</em> message.</p> <p>This is an <em><em>very</em> important</em> message.</p> </body> </html>
<em> vs <i>
The <i> tag also italicizes text but does not imply any semantic meaning. It is purely for stylistic purposes. In contrast, <em> is used to indicate that the content it wraps has a particular emphasis in the context of the surrounding text. This makes <em> more meaningful for search engines and accessibility tools.
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