HTML <strong> tag

The <strong> tag highlights an important part of a text. The content of the tag is displayed as bold. Unlike the <b> tag, which specifies bold text, the <strong> tag is a part of semantic markup. The content of the tag has higher weight for the search engines and the devices while reading it are emphasizing the content with special intonation.

To differentiate the text in bold without taking into account its importance use <b> tag or CSS font-weight feature.


The content is written between opening (<strong>) and closing (</strong>) tags. The closing tag is mandatory.


<!DOCTYPE html>
    <title>Title of the document</title>
    <p>We’ve used &lt;strong&gt; tag to highlight <strong> this important part of the text</strong>.</p>



The <strong> tag supports Global Attributes and the Event Attributes.

How to style <strong> tag

Common properties to alter the visual weight/emphasis/size of text in <strong> tag:?

  • CSS font-style property sets the style of the font. normal | italic | oblique | initial | inherit
  • CSS font-family property specifies a prioritized list of one or more font family names and/or generic family names for the selected element.
  • CSS font-size property sets the size of the font.
  • CSS font-weight property defines whether the font should be bold or thick. CSS text-transform Property controls text case and capitalization.
  • CSS text-decoration property specifies the decoration added to text, and is a shorthand property for text-decoration-line, text-decoration-color, text-decoration-style

Coloring text in <strong> tag:

  • CSS color property describes the color of the text content and text decorations
  • CSS background-color property sets the background color of an element.

Text layout styles for <strong> tag:

  • CSS text-indent property specifies the indentation of the first line in a text block.
  • CSS text-overflow property specifies how overflowed content that is not displayed should be signaled to the user.
  • CSS white-space property specifies how white-space inside an element is handled.
  • CSS word-break property specifies where the lines should be broken.

Other properties worth looking at for <strong> tag

Browser support

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