HTML contains several elements for defining text with a special meaning.
<!DOCTYPE html>
<html>
<body>
<p><b>This text is bold</b></p>
<p><i>This text is italic</i></p>
<p>This is<sub> subscript</sub> and <sup>superscript</sup></p>
</body>
</html>
HTML Formatting Elements
Formatting elements were designed to display special types of text:
<b> - Bold text
<strong> - Important text
<i> - Italic text
<em> - Emphasized text
<mark> - Marked text
<small> - Smaller text
<del> - Deleted text
<ins> - Inserted text
<sub> - Subscript text
<sup> - Superscript text
HTML <b> and <strong> Elements
The HTML <strong> element defines text with strong importance. The content inside is typically displayed in bold.
HTML <i> and <em> Elements
The HTML <i> element defines a part of text in an alternate voice or mood. The content inside is typically displayed in italic.
HTML <small> Element
The HTML <small> element defines smaller text:
HTML <mark> Element
The HTML <mark> element defines text that should be marked or highlighted:
HTML <del> Element
The HTML <del> element defines text that has been deleted from a document. Browsers will usually strike a line through deleted text:
HTML <ins> Element
The HTML <ins> element defines a text that has been inserted into a document. Browsers will usually underline inserted text:
HTML <sub> Element
The HTML <sub> element defines subscript text. Subscript text appears half a character below the normal line, and is sometimes rendered in a smaller font. Subscript text can be used for chemical formulas, like H2O:
HTML <sup> Element
The HTML <sup> element defines superscript text. Superscript text appears half a character above the normal line, and is sometimes rendered in a smaller font. Superscript text can be used for footnotes, like WWW[1]: