headingoffset must be between 0 and 8 Web Standard

Description

The value of the headingoffset attribute must be a number between 0 and 8.

Applicable standards

• HTML5

Change history

• 6.59 Dec 2025 Added to W3 validator in November 2025.

This page describes a web site issue detected in HTML documents by SortSite Desktop and OnDemand Suite.

Rule ID: W3cHtmlHeadingoffsetRange