qa-detect-sticky-scroll

Detect sticky and fixed element scroll regressions on web pages.

Updated May 22, 2026
One-click install
npx skills add https://github.com/Luqman-Ud-Din/blackbox-qa-agent --skill qa-detect-sticky-scroll
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: qa-detect-sticky-scroll
Source: https://github.com/Luqman-Ud-Din/blackbox-qa-agent/tree/main/skills/qa-detect-sticky-scroll
Command: npx skills add https://github.com/Luqman-Ud-Din/blackbox-qa-agent --skill qa-detect-sticky-scroll

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill detects layout regressions where sticky or fixed elements fail during scrolling, helping prevent headers, nav bars, and overlays from detaching or disappearing.

Core Features & Use Cases

  • Sticky behavior validation: Confirms position: sticky elements remain pinned while the page scrolls.
  • Fixed element validation: Verifies position: fixed elements stay visible and anchored in place.
  • Regression detection: Flags common CSS containment issues such as overflow or transformed ancestors that break scroll behavior.

Quick Start

Use the qa-detect-sticky-scroll skill to inspect the current page for sticky and fixed elements that detach or disappear while scrolling.

Frequently Asked Questions about qa-detect-sticky-scroll

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
Why does my sticky header disappear when scrolling the page?

Sticky headers disappear during scrolling when CSS containment issues like overflow or transformed ancestors break scroll behavior. This Skill detects these scroll regressions by probing pinned UI elements and flagging detachment failures.

How do I check if fixed elements stay anchored during responsive scrolling?

You can validate fixed elements during responsive scrolling by applying in-page scroll measurement and visibility re-evaluation. This Skill verifies position fixed elements remain anchored by probing scroll behavior and restoring the original page state afterward.

What causes fixed navigation bars to detach on scrollable web pages?

Fixed navigation bars detach on scrollable web pages when CSS containment properties interfere with their anchored positioning. This Skill detects these layout regressions by evaluating element visibility during manual or automated responsiveness checks.

Can I automate sticky element validation during responsiveness checks?

Yes, you can automate sticky element validation during responsiveness checks. This Skill applies to scrollable web pages with pinned UI elements, performing scroll measurement and visibility re-evaluation to confirm position sticky behavior during probing.

Does probing scroll behavior affect the original page state?

Probing scroll behavior temporarily alters the original page state during measurement, but this Skill restores the original page state after completing visibility re-evaluation and regression detection for sticky and fixed elements.