optgroup must have label or a child legend Web Standard

Description

An optgroup element with no child legend element must have a label attribute.

Applicable standards

• HTML

Change history

• 2026.62 Oct 2026 Added.

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

Rule ID: W3cHtml5OptgroupNoLabelNoLegend