Kilotest: Diagnoses of attribute invalid violation by HTML element 318 on Centre for Effective Altruism page

Basics

About the Centre for Effective Altruism page

• URL: https://www.effectivealtruism.org/
• Tested 38 days ago by job 6gw on 2026-04-24 at 21:54

About HTML element 318

• Tag name: BUTTON
• Text: Subscribe
• Start tag: <button href="" dir="auto" target="_blank" rel="noopener noreferrer" type="submit" class="css-1atwe1p-Button-root-Button-filledBlack">
• XPath: /html/body/div[1]/div[1]/div[1]/main[1]/section[4]/div[1]/div[4]/form[1]/div[1]/button[1]
• Bounding box: x = 1114, y = 1665, width = 127, height = 46

About the attribute invalid issue

• Why it matters: Item behaves improperly
• Priority: highest
• Related WCAG standard: 1.3.1

Diagnoses

Here is how tools diagnose the attribute invalid issue for HTML element 318 of the Centre for Effective Altruism page.

1. Attribute href not allowed on element button at this point.

   Tool: Html Checker API (World Wide Web Consortium)

2. Attribute target not allowed on element button at this point.

   Tool: Html Checker API (World Wide Web Consortium)