Kilotest: Diagnoses of heading level skipped violation by HTML element 848 on Sightline Institute page

Here is how tools diagnose the heading level skipped issue for HTML element 848 of the Sightline Institute page.

Basics

• About the heading level skipped issue
  • Why it matters: Helper misdescribes the document
  • Priority: low
  • Related WCAG standard: 1.3.1
• About the Sightline Institute page
  • URL: https://www.sightline.org/
  • Tested on 2026-04-03 at 04:04
• About HTML element 848
  • Tag name: H4
  • Text: Our Work
  • Start tag: <h4 class="gb-headline gb-headline-eb84f2fa gb-headline-text">
  • XPath: /html/body/div[3]/footer[1]/div[1]/div[1]/div[2]/div[1]/div[2]/div[1]/div[1]/div[1]/h4[1]
  • Bounding box: x = 888, y = 3183, width = 153, height = 26

Diagnoses

1. Heading levels should only increase by one; Heading order invalid

   Tool: Axe (Deque)

   Rule: heading-order

2. The heading h4 (with computed level 4) follows the heading h2 (with computed level 2), skipping 1 heading level.

   Tool: Html Checker API (World Wide Web Consortium)

3. Skipped heading level

   Tool: WAVE (Utah State University)

   Rule: heading_skipped