Kilotest: Diagnoses of line height low violation by HTML element 247 on Mozilla Foundation page

Here is how tools diagnose the line height low issue for HTML element 247 of the Mozilla Foundation page.

Basics

• About the line height low issue
  • Why it matters: Text is difficult to read
  • Priority: low
  • Related WCAG standard: 1.4.8
• About the Mozilla Foundation page
  • URL: https://www.mozilla.org/en-US/
  • Tested on 2026-04-03 at 03:56
• About HTML element 247
  • Take me there
  • Tag name: H2
  • Text: Mozilla Advertising
  • Start tag: <h2 class="m24-c-menu-item-title">
  • XPath: [not obtained]
  • Bounding box: x = 0, y = 0, width = 0, height = 0

Diagnoses

1. Element line height (19.8px) is less than 1.5 times its font size (18.0px)

   Tool: Testaro (CVS Health)

   Rule: lineHeight