2.5 #permalink h5 / .h5

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Specify a heading level 5. For accessibility reasons, H5 elements should not follow a heading element of a lower level, therefor use the provided class with the same name to apply the visual appearance of a H5 to other elements.

Example
Headline H5

Headline H5

Markup 
<h5>Headline H5</h5>
<p class="h5">Headline H5</p>
Source: typo.css, line 134