Allow anchor links to headings inside Stepper blocks

[aldibit]

Current behavior

Currently, GitBook supports anchor links to headings (e.g. /page#section-title) when those headings are part of standard page content.

Problem

When using Stepper blocks to structure content (e.g. multi-step guides), it is possible to add headings (H1, H2, H3) inside each step. These headings are rendered visually as expected, but:

• They do not generate anchor targets
• They cannot be linked to directly via URL fragments
• Links like /page#my-heading fail if the heading is inside a Stepper

This creates inconsistencies between regular content and Stepper content, and limits navigation.

Expected behavior

Headings inside Stepper blocks should:

• Generate anchor IDs just like regular headings
• Be linkable via /page#heading-id

[viktorrenkema]

Hey. Thanks for flagging this one, I expect this should be possible so I'll take a look and report back later!