Frontend Design Principles
pretend1111/claude-desktop-app
Gives practical design rules for polished HTML, CSS and JavaScript interfaces and browser games, covering spacing, type, color, components, motion and responsive breakpoints.
A skill your agent uses when reviewing stylesheets, component styles, and responsive behavior related to Provide visible custom focus indicators.
Install Focus Styles
$ npx skills add thedaviddias/Front-End-Checklist --skill focus-styles -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist focus-styles --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/focus-styles .claude/skills/focus-styles && 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 "focus-styles" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/focus-styles into .claude/skills/focus-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "focus-styles", 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/focus-stylesType 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 focus-styles -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist focus-styles --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/focus-styles .agents/skills/focus-styles && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "focus-styles" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/focus-styles into .agents/skills/focus-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "focus-styles", 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 focus-styles -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist focus-styles --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/focus-styles .cursor/skills/focus-styles && 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 "focus-styles" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/focus-styles into .cursor/skills/focus-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "focus-styles", 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/focus-styles--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 focus-styles -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist focus-styles --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/focus-styles .gemini/skills/focus-styles && 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 "focus-styles" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/focus-styles into .gemini/skills/focus-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "focus-styles", 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 focus-stylesInstalls 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 focus-styles -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/focus-styles .github/skills/focus-styles && 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 "focus-styles" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/focus-styles into .github/skills/focus-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "focus-styles", 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 focus-styles -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 focus-styles --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/focus-styles .opencode/skills/focus-styles && 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 "focus-styles" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/focus-styles into .opencode/skills/focus-styles/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "focus-styles", 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
focus-styles- GitHub stars
- 74k
- Token cost
- ~639 tokens
- SKILL.md length
- 294 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 stylesheets, component styles, and responsive behavior related to Provide visible custom focus indicators.
- Reviewing stylesheets
- 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
- Component styles
What it does
Focus Styles is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing stylesheets, component styles, and responsive behavior related to Provide visible custom focus indicators. Check the rendered layout across breakpoints and interaction states before proposing a fix.
Its SKILL.md is about 640 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 CSS and styling, Responsive design and Accessibility. 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 stylesheets
- Component styles
- Responsive behavior related to Provide visible custom focus indicators
Example prompts
- “/focus-styles”
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
Focus Styles loads about 639 tokens when it runs, and up to ~1.5k if it reads all its reference files. Until then it costs about 58 tokens; SKILL.md has 294 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). 294 words, ~639 tokens.
Download SKILL.mdSave it as
.claude/skills/focus-styles/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- focus-styles
- description
- Use when reviewing stylesheets, component styles, and responsive behavior related to Provide visible custom focus indicators. Check the rendered layout across breakpoints and interaction states before proposing a fix.
- metadata.category
- css
- metadata.priority
- high
- metadata.difficulty
- beginner
- metadata.estimatedTime
- 15
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/css/focus-styles
Provide visible custom focus indicators
Users who navigate by keyboard (people with motor disabilities, power users, people in assistive technology contexts) rely entirely on focus indicators to know where they are on the page. Removing outlines without replacement makes an entire site unusable for keyboard users. WCAG 2.4.7 requires a visible focus indicator, and WCAG 2.4.13 defines a stronger size-and-contrast target for custom indicators.
Quick Reference
- Never use outline: none or outline: 0 without a visible :focus-visible replacement
- Use :focus-visible instead of :focus to show indicators only during keyboard navigation
- Focus indicators must have 3:1 contrast ratio against adjacent colors (WCAG 2.2)
- Provide at least 2px solid outline with an offset for a high-quality focus ring
- If a focus ring is drawn with pseudo-elements, verify it is anchored to the correct positioned element and not clipped by
overflow: hidden - If the component uses a stretched-link pattern, verify the visible focus ring follows the actual interactive element rather than a parent wrapper by accident
Check
Find all instances of outline: none, outline: 0, or :focus { outline: none } in this CSS. Check if they provide an alternative visible focus indicator. If the replacement uses pseudo-elements, also verify the ring cannot be clipped or misplaced by overflow or missing positioning context.
Fix
Replace outline: none on :focus with :focus-visible styles that provide a clearly visible custom focus ring with appropriate contrast.
Explain
Explain the difference between :focus and :focus-visible, why focus styles matter for accessibility, and how to design an accessible focus ring.
Code Review
Review stylesheets, component styles, and responsive states related to Provide visible custom focus indicators. Flag exact selectors, declarations, or breakpoints that violate the rule in the rendered UI.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/css/focus-styles
© 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/focus-styles of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Focus Styles 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 |
|---|---|---|---|---|---|---|
| Focus Styles this skillthedaviddias/Front-End-Checklist | 74k | — | ~639 | Automated safety check: Pass | MIT | |
| Frontend Design Principlespretend1111/claude-desktop-app | 496 | 1 repos | ~824 | Automated safety check: Pass | Custom licence | |
| Acarshub Design Languagesdr-enthusiasts/docker-acarshub | 117 | — | ~1.1k | Automated safety check: Pass | GPL-3.0 | |
| Web Design Reviewergithub/awesome-copilot | 40k | 3 repos | ~2.6k | Automated safety check: Pass | MIT | |
| CSS Styling Expertcin12211/orca-q | 224 | — | ~4.6k | Automated safety check: Pass | MIT | |
| UI EngineeringNoobyGains/godmode | 109 | — | ~3.1k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about Focus Styles
What does Focus Styles do?
A skill your agent uses when reviewing stylesheets, component styles, and responsive behavior related to Provide visible custom focus indicators. Focus Styles is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing stylesheets, component styles, and responsive behavior related to Provide visible custom focus indicators.
When should I use Focus Styles?
Focus Styles fits situations like: reviewing stylesheets; component styles; responsive behavior related to Provide visible custom focus indicators.
How do I install Focus Styles in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill focus-styles -a claude-code`. Or copy the skill folder (skills/focus-styles in thedaviddias/Front-End-Checklist) into .claude/skills/focus-styles in your project. Claude Code loads it when a task matches its description.
How do I install Focus Styles in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill focus-styles -a codex`. Or copy the skill folder (skills/focus-styles in thedaviddias/Front-End-Checklist) into .agents/skills/focus-styles in your project. Codex loads it when a task matches its description.
Can I use Focus Styles 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 focus-styles -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/focus-styles, .gemini/skills/focus-styles, .github/skills/focus-styles and .opencode/skills/focus-styles in your project.
What does Focus Styles need to run?
SKILL.md names no scripts, command-line tools or credentials: Focus Styles is instructions for the agent only.
Does Focus Styles 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 Focus Styles 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 Focus Styles use?
Focus Styles 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 Focus Styles use?
About 639 tokens (SKILL.md is roughly 2.6k 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 854 tokens, read only when the agent opens those files.
What are the alternatives to Focus Styles?
Skills that share tags, products or a category with Focus Styles: Frontend Design Principles (pretend1111/claude-desktop-app, 496 stars), Acarshub Design Language (sdr-enthusiasts/docker-acarshub, 117 stars), Web Design Reviewer (github/awesome-copilot, 40k stars) and CSS Styling Expert (cin12211/orca-q, 224 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Focus Styles?
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.