Kilotest: Diagnoses of attribute value invalid violation by HTML element 87 on Prometheus page

Here is how tools diagnose the attribute value invalid issue for HTML element 87 of the Prometheus page.

Basics

• About the attribute value invalid issue
  • Why it matters: Item behaves improperly
  • Priority: highest
  • Related WCAG standard: 1.3.1
• About the Prometheus page
  • URL: https://www.joinprometheus.org/
  • Tested on 2026-04-07 at 19:19
• About HTML element 87
  • Tag name: SCRIPT
  • Text: [not applicable]
  • Start tag: <script type="wix/htmlEmbeds" id="pageHtmlEmbeds.bodyStart start">
  • XPath: /html/body/script[2]
  • Bounding box: x = 0, y = 0, width = 0, height = 0

Diagnoses

1. Bad value pageHtmlEmbeds.bodyStart start for attribute id on element script: An ID must not contain whitespace.

   Tool: Html Checker API (World Wide Web Consortium)