Impeccable
bestofjs/bestofjs
A skill your agent uses when the user wants to design, redesign, shape, critique, audit, polish, clarify, distill, harden, optimize, adapt, animate, colorize, extract, or otherwise improve a…
A skill your agent uses when reviewing a CSS architecture for specificity issues, setting up a design system, or migrating a large codebase from utility-first to a layered architecture.
Install Cascade Layers
$ npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist cascade-layers --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/cascade-layers .claude/skills/cascade-layers && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "cascade-layers" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/cascade-layers into .claude/skills/cascade-layers/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cascade-layers", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/cascade-layersType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist cascade-layers --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/cascade-layers .agents/skills/cascade-layers && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "cascade-layers" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/cascade-layers into .agents/skills/cascade-layers/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cascade-layers", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist cascade-layers --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/cascade-layers .cursor/skills/cascade-layers && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "cascade-layers" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/cascade-layers into .cursor/skills/cascade-layers/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cascade-layers", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/thedaviddias/Front-End-Checklist.git --path skills/cascade-layers--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist cascade-layers --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/cascade-layers .gemini/skills/cascade-layers && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "cascade-layers" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/cascade-layers into .gemini/skills/cascade-layers/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cascade-layers", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install thedaviddias/Front-End-Checklist cascade-layersInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/cascade-layers .github/skills/cascade-layers && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "cascade-layers" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/cascade-layers into .github/skills/cascade-layers/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cascade-layers", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist cascade-layers --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/cascade-layers .opencode/skills/cascade-layers && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "cascade-layers" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/cascade-layers into .opencode/skills/cascade-layers/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "cascade-layers", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
cascade-layers- GitHub stars
- 74k
- Token cost
- ~514 tokens
- SKILL.md length
- 231 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing a CSS architecture for specificity issues, setting up a design system, or migrating a large codebase from utility-first to a layered architecture.
- Reviewing a CSS architecture for specificity issues
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Setting up a design system
What it does
Cascade Layers is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing a CSS architecture for specificity issues, setting up a design system, or migrating a large codebase from utility-first to a layered architecture.
Its SKILL.md is about 510 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
It sits in Frontend & Design, covering Design systems. The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing a CSS architecture for specificity issues
- Setting up a design system
- Migrating a large codebase from utility-first to a layered architecture
Example prompts
- “/cascade-layers”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Cascade Layers loads about 514 tokens when it runs, and up to ~2.2k if it reads all its reference files. Until then it costs about 45 tokens; SKILL.md has 231 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 231 words, ~514 tokens.
Download SKILL.mdSave it as
.claude/skills/cascade-layers/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- cascade-layers
- description
- Use when reviewing a CSS architecture for specificity issues, setting up a design system, or migrating a large codebase from utility-first to a layered architecture.
- metadata.category
- css
- metadata.priority
- low
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 30
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/css/cascade-layers
Use @layer to manage CSS cascade order explicitly
Specificity conflicts are one of the most common causes of CSS bugs in large codebases. Developers resort to !important, deeply nested selectors, or inline styles to win specificity wars, creating an unmaintainable arms race. Cascade layers move the source of truth for cascade order from selector specificity to explicit layer ordering, making the system predictable and easy to reason about.
Quick Reference
- Declare your layer stack at the top of your main CSS file to fix order regardless of import sequence
- Styles in later layers win over styles in earlier layers, regardless of selector specificity
- Put third-party/reset styles in early layers so your own styles always override them
- Unlayered styles (no @layer) have the highest priority — migrate gradually
Check
Check whether the CSS uses cascade layers to manage specificity, and whether the layer order is explicitly declared.
Fix
Introduce @layer declarations for reset, base, components, and utilities, and migrate existing styles into appropriate layers.
Explain
Explain how CSS Cascade Layers work, how layer order determines cascade priority, and why this is preferable to specificity-based overrides.
Code Review
Review the CSS for !important declarations, excessively specific selectors (more than two class selectors), and inline styles used to override component styles — all are signals that the cascade is not under control.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/css/cascade-layers
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/cascade-layers of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Cascade Layers next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Cascade Layers this skillthedaviddias/Front-End-Checklist | 74k | — | ~514 | Automated safety check: Pass | MIT | |
| Impeccablebestofjs/bestofjs | 3.1k | 26 repos | ~2.6k | Automated safety check: Pass | MIT | |
| Figma Design System Builderwarpdotdev/warp | 65k | 2 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 | |
| Figma use_figma Plugin API Ruleswarpdotdev/warp | 65k | 4 repos | ~4.4k | Automated safety check: Pass | AGPL-3.0 | |
| UI StylingOhh-889/skyroc | 795 | 13 repos | ~2.5k | Automated safety check: Pass | MIT | |
| Shadcnsupabase/evals | 144 | 42 repos | ~4.5k | Automated safety check: Pass | Apache-2.0 |
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Related
Categories
Questions about Cascade Layers
What does Cascade Layers do?
A skill your agent uses when reviewing a CSS architecture for specificity issues, setting up a design system, or migrating a large codebase from utility-first to a layered architecture. Cascade Layers is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing a CSS architecture for specificity issues, setting up a design system, or migrating a large codebase from utility-first to a layered architecture.
When should I use Cascade Layers?
Cascade Layers fits situations like: reviewing a CSS architecture for specificity issues; setting up a design system; migrating a large codebase from utility-first to a layered architecture.
How do I install Cascade Layers in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a claude-code`. Or copy the skill folder (skills/cascade-layers in thedaviddias/Front-End-Checklist) into .claude/skills/cascade-layers in your project. Claude Code loads it when a task matches its description.
How do I install Cascade Layers in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a codex`. Or copy the skill folder (skills/cascade-layers in thedaviddias/Front-End-Checklist) into .agents/skills/cascade-layers in your project. Codex loads it when a task matches its description.
Can I use Cascade Layers in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add thedaviddias/Front-End-Checklist --skill cascade-layers -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cascade-layers, .gemini/skills/cascade-layers, .github/skills/cascade-layers and .opencode/skills/cascade-layers in your project.
What does Cascade Layers need to run?
SKILL.md names no scripts, command-line tools or credentials: Cascade Layers is instructions for the agent only.
Does Cascade Layers access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Cascade Layers safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Cascade Layers use?
Cascade Layers is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Cascade Layers use?
About 514 tokens (SKILL.md is roughly 2.1k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.7k tokens, read only when the agent opens those files.
What are the alternatives to Cascade Layers?
Skills that share tags, products or a category with Cascade Layers: Impeccable (bestofjs/bestofjs, 3.1k stars), Figma Design System Builder (warpdotdev/warp, 65k stars), Figma use_figma Plugin API Rules (warpdotdev/warp, 65k stars) and UI Styling (Ohh-889/skyroc, 795 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Cascade Layers?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,421 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.