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Grok+17 agentsCross Browser Bug Triager
Diagnose and fix engine-specific CSS and layout bugs for Safari, iOS, and mobile browsers.
$5
Cross Browser Bug Triager
Example session with this skill installed
My mobile navigation menu is being cut off at the bottom on Safari on iPhone, but it works fine in Chrome on my desktop. Here is my CSS for the container: height: 100vh; overflow-y: scroll;
- Read your context and instructions
- Compiled the cross browser bug
- Generated the UI component
The issue is the classic WebKit 100vh quirk where the address bar isn't accounted for in the viewport height.
Diagnosis: WebKit Viewport Overflow.
Fix: Use height: 100dvh; (Dynamic Viewport Height) to automatically adjust for browser UI elements.
Verification: Test in iOS Safari.
cross-browser-bug-triager.tsx
TSX · React component
Example file from a real run - the skill writes it into your workspace.
Connects securely to your tools. The creator never sees your data.
What you get
About this skill
The problem
Layouts that look perfect in Chrome often break in Safari or mobile browsers due to engine-specific rendering quirks. Identifying whether a bug stems from WebKit, Gecko, or Blink behavior is difficult without deep platform-specific knowledge.
What it does
- Maps reported UI symptoms to specific browser engine behaviors (WebKit, Blink, Gecko).
- Identifies mobile-specific issues like the Safari 100vh address bar overflow and safe-area-insets.
- Diagnoses stacking context and z-index inconsistencies triggered by transforms or filters.
- Troubleshoots touch-vs-hover interaction conflicts and sticky positioning failures.
- Provides standards-based fixes using modern CSS units like dvh, svh, and lvh.
Frameworks & tools
CSS3, HTML5, WebKit (Safari/iOS), Blink (Chrome/Edge), Gecko (Firefox).
Why this beats prompting it yourself
Generic prompts often result in outdated vendor-prefix suggestions or "shotgun debugging" that bloats your CSS. This skill uses a structured triage process to pinpoint the exact engine quirk, favoring modern standards-based solutions over fragile hacks.
Use cases
- Fixing elements that overflow or gap unexpectedly on iPhone browsers.
- Resolving sticky headers that fail only on specific mobile viewports.
- Debugging hover states that get "stuck" on touch devices.
- Aligning inconsistent Flexbox or Grid behavior across different rendering engines.
Known limitations
Requires specific browser, OS, and device details to provide an accurate diagnosis. Visual bugs are best triaged when CSS/HTML snippets or detailed box-model descriptions are provided.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
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- 2
Unzip into your skills folder
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- 3
Ask your agent to use it
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