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css-expert

CSS expert for flexbox, grid, animations, responsive design, and modern layout techniques

57

Quality

64%

Does it follow best practices?

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SecuritybySnyk

Passed

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tessl review fix ./crates/openfang-skills/bundled/css-expert/SKILL.md
SKILL.md
Quality
Evals
Security

Quality

Content

57%

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

The body is a tidy, well-sectioned CSS reference with concrete property and value snippets, but it largely restates knowledge Claude already has and lacks complete executable code examples or any decision workflow. Adding copy-pasteable examples and trimming familiar fundamentals would lift the weaker dimensions.

Suggestions

Add complete, copy-pasteable CSS code blocks for the headline patterns (Holy Grail layout, fluid typography with clamp(), dark-mode token swap) instead of only inline fragments.

Trim guidance that restates CSS fundamentals Claude already knows; retain only non-obvious decisions, browser-support caveats, and edge cases.

Include a brief decision guide (e.g. flexbox vs grid vs container queries) so the reference also supports choosing an approach, not just describing techniques.

DimensionReasoningScore

Conciseness

The bullet style is lean and well-organized rather than padded, but much of it restates CSS fundamentals Claude already knows (flexbox for 1D, grid for 2D, custom properties for theming), so not every token earns its place.

2 / 3

Actionability

Concrete inline fragments appear (clamp(1rem, 2.5vw, 2rem), grid-template-areas, :has()/:is()/:where(), auto-fit/auto-fill with minmax()), but there are no complete, copy-pasteable code blocks, so the guidance is specific yet not fully executable.

2 / 3

Workflow Clarity

Content is clearly organized into labeled sections (Key Principles, Techniques, Common Patterns, Pitfalls), but this is reference material with no multi-step process or validation checkpoints to sequence.

2 / 3

Progressive Disclosure

The skill is under 50 lines, self-contained with no external references needed, and organized into well-signaled sections, so progressive disclosure is satisfied by the section structure alone.

3 / 3

Total

9

/

12

Passed

Description

72%

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

The description is specific to a clear CSS niche with natural trigger terms, but it lists domains rather than concrete actions and omits any explicit 'Use when...' trigger guidance. Adding action verbs and a trigger clause would raise its weakest dimensions.

Suggestions

Add an explicit 'Use when...' trigger clause, e.g. 'Use when building or debugging CSS layouts, responsive designs, flexbox/grid structures, or animations.'

Replace the topic-only list with concrete action verbs, e.g. 'Build flexbox and grid layouts, create animations, and implement responsive, container-query-based designs.'

DimensionReasoningScore

Specificity

The description names concrete sub-domains ("flexbox, grid, animations, responsive design, and modern layout techniques") but uses no action verbs, so it lists a domain rather than concrete capabilities.

2 / 3

Completeness

It states what the skill covers but provides no "Use when..." clause or equivalent explicit trigger guidance, which caps completeness at 2 per the judging guidelines.

2 / 3

Trigger Term Quality

"flexbox", "grid", "animations", "responsive design", and "CSS expert" are natural terms a user would actually say when they need this skill.

3 / 3

Distinctiveness Conflict Risk

It targets a clear CSS niche with distinct triggers (flexbox, grid, animations, responsive design), making it unlikely to fire for the wrong skill.

3 / 3

Total

10

/

12

Passed

Validation

100%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation16 / 16 Passed

Validation for skill structure

No warnings or errors.

Repository
RightNow-AI/openfang
Reviewed

Table of Contents

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