Ultimate UI
NeverSight/learn-skills.dev
A skill your agent uses when building user interfaces that need to look polished, modern, and intentional - not like AI-generated slop.
Gives practical design rules for polished HTML, CSS and JavaScript interfaces and browser games, covering spacing, type, color, components, motion and responsive breakpoints.
Install Frontend Design Principles
$ npx skills add pretend1111/claude-desktop-app --skill frontend-design -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install pretend1111/claude-desktop-app frontend-design --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/pretend1111/claude-desktop-app.git skills-src && mkdir -p .claude/skills && cp -r skills-src/electron/skills/frontend-design .claude/skills/frontend-design && 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 "frontend-design" agent skill from https://github.com/pretend1111/claude-desktop-app/tree/main/electron/skills/frontend-design into .claude/skills/frontend-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "frontend-design", 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/pretend1111/claude-desktop-app/tree/main/electron/skills/frontend-designType 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 pretend1111/claude-desktop-app --skill frontend-design -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install pretend1111/claude-desktop-app frontend-design --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pretend1111/claude-desktop-app.git skills-src && mkdir -p .agents/skills && cp -r skills-src/electron/skills/frontend-design .agents/skills/frontend-design && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "frontend-design" agent skill from https://github.com/pretend1111/claude-desktop-app/tree/main/electron/skills/frontend-design into .agents/skills/frontend-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "frontend-design", 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 pretend1111/claude-desktop-app --skill frontend-design -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install pretend1111/claude-desktop-app frontend-design --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pretend1111/claude-desktop-app.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/electron/skills/frontend-design .cursor/skills/frontend-design && 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 "frontend-design" agent skill from https://github.com/pretend1111/claude-desktop-app/tree/main/electron/skills/frontend-design into .cursor/skills/frontend-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "frontend-design", 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/pretend1111/claude-desktop-app.git --path electron/skills/frontend-design--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 pretend1111/claude-desktop-app --skill frontend-design -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install pretend1111/claude-desktop-app frontend-design --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pretend1111/claude-desktop-app.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/electron/skills/frontend-design .gemini/skills/frontend-design && 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 "frontend-design" agent skill from https://github.com/pretend1111/claude-desktop-app/tree/main/electron/skills/frontend-design into .gemini/skills/frontend-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "frontend-design", 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 pretend1111/claude-desktop-app frontend-designInstalls 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 pretend1111/claude-desktop-app --skill frontend-design -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/pretend1111/claude-desktop-app.git skills-src && mkdir -p .github/skills && cp -r skills-src/electron/skills/frontend-design .github/skills/frontend-design && 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 "frontend-design" agent skill from https://github.com/pretend1111/claude-desktop-app/tree/main/electron/skills/frontend-design into .github/skills/frontend-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "frontend-design", 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 pretend1111/claude-desktop-app --skill frontend-design -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install pretend1111/claude-desktop-app frontend-design --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pretend1111/claude-desktop-app.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/electron/skills/frontend-design .opencode/skills/frontend-design && 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 "frontend-design" agent skill from https://github.com/pretend1111/claude-desktop-app/tree/main/electron/skills/frontend-design into .opencode/skills/frontend-design/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "frontend-design", 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
frontend-design- GitHub stars
- 494
- Used in
- 1 other repo
- Token cost
- ~824 tokens
- SKILL.md length
- 404 words
- Files
- 1
- Skills in repo
- 5
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Gives practical design rules for polished HTML, CSS and JavaScript interfaces and browser games, covering spacing, type, color, components, motion and responsive breakpoints.
- Building a website or web app with HTML, CSS and JavaScript
- SKILL.md covers Design Principles, For Games & Interactive Projects, For Single-File Projects and Output Guidelines
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Creating a browser game with a start screen, score display and game over state
What it does
This is a compact rulebook for frontend work. It prescribes a spacing scale from 4px to 64px, generous whitespace, Grid or Flexbox layouts and a content max-width of 960 to 1200px. For type it suggests a system sans-serif stack, a clear heading hierarchy, body text of 16px or more, line height of 1.5 to 1.7 for body and 1.1 to 1.3 for headings, and lines of about 65 to 75 characters. Color guidance starts with neutral grays plus one accent, requires WCAG AA contrast, and says dark mode should use dark grays rather than pure black.
Component and interaction rules cover button hierarchy, card radii of 8 to 12px, form touch targets of 44px or more, modals, hover states and CSS transitions of 150 to 300ms using transform and opacity. A mobile-first section lists test breakpoints at 480, 768, 1024 and 1280px. A final section covers games: canvas or DOM rendering, a requestAnimationFrame loop, input handling, visual feedback, start and game over screens, and Web Audio sound. The excerpt is cut off there.
When your agent uses it
- Building a website or web app with HTML, CSS and JavaScript
- Creating a browser game with a start screen, score display and game over state
- Fixing cramped spacing, weak hierarchy or low contrast in an interface
- Making a page responsive with a mobile-first approach
Example prompts
- “Build a landing page for a bakery with a mobile-first layout and one accent color.”
- “Review this CSS for spacing, contrast and touch-target problems.”
- “Create a canvas-based snake game with a start screen, score display and game over state.”
- “Add subtle hover states and fade-in entrance animations to this card grid.”
What it can do on your machine
Read from SKILL.md and the folder at commit 8cbd7b7. 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
No URLs in SKILL.md.
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
Frontend Design Principles loads about 824 tokens when it runs. Until then it costs about 53 tokens; SKILL.md has 404 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 404 words (~824 tokens).
“You are creating frontend code (HTML, CSS, JavaScript). Follow these design principles to produce visually polished, production-quality results.”
- name
- frontend-design
Files
Just SKILL.md in electron/skills/frontend-design of pretend1111/claude-desktop-app.
Open the folder on GitHubat commit 8cbd7b7
Used in 1 other repository
We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in pretend1111/claude-desktop-app, which our catalogue first saw on October 7, 2026.
Compare with similar skills
Frontend Design Principles 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 |
|---|---|---|---|---|---|---|
| Frontend Design Principles this skillpretend1111/claude-desktop-app | 494 | 1 repos | ~824 | Automated safety check: Pass | Custom licence | |
| Ultimate UINeverSight/learn-skills.dev | 216 | 1 repos | ~4k | Automated safety check: Pass | MIT | |
| Frontend Designseb1n/awesome-ai-agent-skills | 206 | — | ~2.3k | Automated safety check: Pass | MIT | |
| UI StylingOhh-889/skyroc | 795 | 13 repos | ~2.5k | Automated safety check: Pass | MIT | |
| Refero Designreferodesign/refero_skill | 295 | — | ~5.3k | Automated safety check: Pass | MIT | |
| Material Design 3 UI/UX Guideskydashnet/material-design-3-ui-skill | 130 | — | ~3k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Frontend Design Principles
What does Frontend Design Principles do?
Gives practical design rules for polished HTML, CSS and JavaScript interfaces and browser games, covering spacing, type, color, components, motion and responsive breakpoints. This is a compact rulebook for frontend work. It prescribes a spacing scale from 4px to 64px, generous whitespace, Grid or Flexbox layouts and a content max-width of 960 to 1200px.
When should I use Frontend Design Principles?
Frontend Design Principles fits situations like: building a website or web app with HTML, CSS and JavaScript; creating a browser game with a start screen, score display and game over state; fixing cramped spacing, weak hierarchy or low contrast in an interface; making a page responsive with a mobile-first approach.
How do I install Frontend Design Principles in Claude Code?
Run `npx skills add pretend1111/claude-desktop-app --skill frontend-design -a claude-code`. Or copy the skill folder (electron/skills/frontend-design in pretend1111/claude-desktop-app) into .claude/skills/frontend-design in your project. Claude Code loads it when a task matches its description.
How do I install Frontend Design Principles in Codex?
Run `npx skills add pretend1111/claude-desktop-app --skill frontend-design -a codex`. Or copy the skill folder (electron/skills/frontend-design in pretend1111/claude-desktop-app) into .agents/skills/frontend-design in your project. Codex loads it when a task matches its description.
Can I use Frontend Design Principles 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 pretend1111/claude-desktop-app --skill frontend-design -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/frontend-design, .gemini/skills/frontend-design, .github/skills/frontend-design and .opencode/skills/frontend-design in your project.
What does Frontend Design Principles need to run?
SKILL.md names no scripts, command-line tools or credentials: Frontend Design Principles is instructions for the agent only.
Does Frontend Design Principles access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Frontend Design Principles 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 Frontend Design Principles use?
Frontend Design Principles has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Frontend Design Principles use?
About 824 tokens (SKILL.md is roughly 3.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Frontend Design Principles?
Skills that share tags, products or a category with Frontend Design Principles: Ultimate UI (NeverSight/learn-skills.dev, 216 stars), Frontend Design (seb1n/awesome-ai-agent-skills, 206 stars), UI Styling (Ohh-889/skyroc, 795 stars) and Refero Design (referodesign/refero_skill, 295 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Frontend Design Principles?
pretend1111 (a GitHub user) maintains it in pretend1111/claude-desktop-app, which has 494 GitHub stars. The repository holds 5 skills in this directory. The repository was last updated on April 22, 2026.
Source: pretend1111/claude-desktop-app on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.