Kilotest: Diagnoses of invalid CSS at-rule violation by HTML element 0 on Hesperian Health Guides page

Basics

About the page

• URL: https://hesperian.org/
• Tested 3 days ago on 2026-10-07 at 21:37 by job 261007T2129-2eu
• Summary of results:
  • Rule engines:
    • Called: 12
    • Were able to test: 12
    • Reported any rule violations: 11
  • Violations: 947
  • Violators: 295
  • Issues: 57
• Download the full technical report (JSON)

About the issue

• Why it matters: Page cannot be properly displayed in particular contexts
• Priority: high
• Related WCAG standard: 4.1
• Reported by 1 rule engine (Html Checker API)
• Violations: 8
• Violators: 1

About the violator

• Tag name: HTML
• Text: [not applicable]
• Start tag: <html dir="ltr" lang="en-US" prefix="og: https://ogp.me/ns#" class="html_stretched responsive av-preloader-disabled html_header_top html_logo_left html_main_nav_header html_menu_right html_custom html_header_sticky_disabled html_header_shrinking_disabled html_header_topbar_active html_mobile_menu_phone html_header_searchicon html_content_align_center html_header_unstick_top_disabled html_header_stretch html_elegant-blog html_modern-blog html_av-overlay-full html_157 html_av-submenu-noclone html_entry_id_25058 av-cookies-no-cookie-consent av-no-preview av-default-lightbox html_text_menu_active av-mobile-menu-switch-default avia_desktop js_active avia_transform avia_transform3d avia-webkit avia-webkit-153 avia-chrome avia-chrome-153 no-touch-device pointer-device-fine pointer-device-coarse">
• XPath: /html
• Bounding box: x = 0, y = 0, width = 1920, height = 2845
• Reported by Html Checker API

Diagnoses

Here is how rule engines diagnose the invalid CSS at-rule issue for HTML element 0 of the Hesperian Health Guides page.

1. Style rule a not allowed outside an @scope rule in a style element in body. Extract: [1]/style[1]"> a { text-deco

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: Style rule a not allowed outside an @scope rule in a style element in body.

2. Style rule br not allowed outside an @scope rule in a style element in body. Extract: 0A82C; } br { l

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: Style rule br not allowed outside an @scope rule in a style element in body.

3. Style rule .button not allowed outside an @scope rule in a style element in body. Extract: tyle[1]"> .button { b

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: Style rule .button not allowed outside an @scope rule in a style element in body.

4. Style rule .button not allowed outside an @scope rule in a style element in body. Extract: inter; } .button {bord

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: Style rule .button not allowed outside an @scope rule in a style element in body.

5. Style rule .button:hover not allowed outside an @scope rule in a style element in body. Extract: s: 10px;} .button:hover {back

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: Style rule .button:hover not allowed outside an @scope rule in a style element in body.

6. Style rule svg not allowed outside an @scope rule in a style element in body. Extract: yle[1]"> svg{ fi

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: Style rule svg not allowed outside an @scope rule in a style element in body.

7. Style rule svg:hover not allowed outside an @scope rule in a style element in body. Extract: ease; } svg:hover{ fi

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: Style rule svg:hover not allowed outside an @scope rule in a style element in body.

8. Style rule svg not allowed outside an @scope rule in a style element in body. Extract: 6fc; } svg {

   Rule engine: Html Checker API (World Wide Web Consortium)

   Rule: Style rule svg not allowed outside an @scope rule in a style element in body.