Material Design 3 UI/UX Guide
skydashnet/material-design-3-ui-skill
Guides designing, reviewing or implementing interfaces that follow Google's Material Design 3 system: semantic tokens, component states, adaptive layout and accessibility.
A skill your agent uses when applies to all CSS font-size declarations, particularly those using px units for body text, UI labels, and navigation.
Install Font Size
$ npx skills add thedaviddias/Front-End-Checklist --skill font-size -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist font-size --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/font-size .claude/skills/font-size && 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 "font-size" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/font-size into .claude/skills/font-size/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "font-size", 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/font-sizeType 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 font-size -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist font-size --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/font-size .agents/skills/font-size && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "font-size" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/font-size into .agents/skills/font-size/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "font-size", 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 font-size -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist font-size --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/font-size .cursor/skills/font-size && 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 "font-size" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/font-size into .cursor/skills/font-size/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "font-size", 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/font-size--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 font-size -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist font-size --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/font-size .gemini/skills/font-size && 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 "font-size" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/font-size into .gemini/skills/font-size/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "font-size", 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 font-sizeInstalls 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 font-size -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/font-size .github/skills/font-size && 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 "font-size" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/font-size into .github/skills/font-size/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "font-size", 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 font-size -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 font-size --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/font-size .opencode/skills/font-size && 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 "font-size" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/font-size into .opencode/skills/font-size/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "font-size", 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
font-size- GitHub stars
- 74k
- Token cost
- ~896 tokens
- SKILL.md length
- 482 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when applies to all CSS font-size declarations, particularly those using px units for body text, UI labels, and navigation.
- Applies to all CSS font-size declarations
- 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
- Particularly those using px units for body text
What it does
Font Size is an agent skill from thedaviddias/Front-End-Checklist. Use when applies to all CSS font-size declarations, particularly those using px units for body text, UI labels, and navigation. Use when auditing mobile responsiveness and accessibility compliance. Check for font-size in media queries targeting small screens.
Its SKILL.md is about 900 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 Responsive design, Regulatory compliance 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
- Applies to all CSS font-size declarations
- Particularly those using px units for body text
- Auditing mobile responsiveness and accessibility compliance
Example prompts
- “/font-size”
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
Font Size loads about 896 tokens when it runs, and up to ~1.5k if it reads all its reference files. Until then it costs about 69 tokens; SKILL.md has 482 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). 482 words, ~896 tokens.
Download SKILL.mdSave it as
.claude/skills/font-size/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- font-size
- description
- Use when applies to all CSS `font-size` declarations, particularly those using `px` units for body text, UI labels, and navigation. Use when auditing mobile responsiveness and accessibility compliance. Check for `font-size` in media queries targeting small screens.
- metadata.category
- css
- metadata.priority
- medium
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 10
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/css/font-size
Use readable font sizes on mobile
Approximately 1 in 3 adults over 65 increases their browser's default font size. Low-vision users who cannot use screen magnifiers rely on browser font size settings as their primary accessibility tool. If font sizes are set in px only, browser font size preferences are ignored entirely. Text smaller than 16px on mobile forces all users to zoom in, breaking the page layout and triggering horizontal scroll. iOS Safari's auto-inflation of sub-12px text causes unintended layout shifts.
Quick Reference
- Body text should be at least 16px (1rem) on mobile — smaller sizes force users to zoom
- Avoid
font-sizevalues below 12px; iOS Safari ignores values below 12px and auto-inflates them - Use
remoremunits instead ofpxso text scales with the user's browser font size preference - Never set
font-size: 100%on<html>using an override that blocks user scaling — respect the browser default (16px) - WCAG 2.1 SC 1.4.4 (Resize Text, Level AA): text must be resizable up to 200% without loss of content or functionality
Check
Find all CSS font-size declarations. Flag: (1) body text or paragraph text set below 16px (or 1rem); (2) any font-size below 12px; (3) font-sizes set in px on <html> or <body> that override the browser default; (4) font-sizes that do not scale proportionally when the browser zoom is set to 200% (test in Chrome DevTools by setting font-size in browser settings or using zoom). Check that text remains readable and layout does not break at 200% zoom.
Show full SKILL.md (233 more words)Show less
Fix
(1) Convert pixel font sizes to rem units: divide the pixel value by 16 (the browser default) — e.g., 14px becomes 0.875rem. (2) Set body text to at least 1rem (16px equivalent) on mobile. (3) Replace html { font-size: 10px } (a common reset trick) with html { font-size: 62.5% } or avoid font-size resets entirely — instead use rem values calculated from the actual 16px base. (4) If small text is intentional (captions, footnotes), ensure it is at least 0.75rem (12px) and use font-size: 0.75rem so it scales with user preferences.
Explain
WCAG 2.1 SC 1.4.4 (Resize Text) requires that text can be resized up to 200% without loss of content or functionality, except for captions and images of text. Using px units for font sizes makes text immune to browser font size settings (though not to browser zoom). Using rem or em units allows text to scale with the root font size, which the user can adjust in browser settings — this is the preferred approach. iOS Safari also has a built-in heuristic that inflates text smaller than 12px when the page is displayed in mobile view, which can cause layout inconsistencies.
Code Review
Review stylesheets, component styles, and responsive states related to Use readable font sizes on mobile. 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.
© 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/font-size of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Font Size 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 |
|---|---|---|---|---|---|---|
| Font Size this skillthedaviddias/Front-End-Checklist | 74k | — | ~896 | Automated safety check: Pass | MIT | |
| Material Design 3 UI/UX Guideskydashnet/material-design-3-ui-skill | 138 | — | ~3k | Automated safety check: Pass | MIT | |
| Better Designmarvkr/better-design | 254 | — | ~1.2k | Automated safety check: Pass | MIT | |
| UI Design Systemtry-works/role-model | 117 | — | ~5k | Automated safety check: Pass | MIT | |
| Building Tablesancoleman/ai-design-components | 525 | — | ~1.8k | Automated safety check: Pass | MIT | |
| Frontend Design Principlespretend1111/claude-desktop-app | 496 | 1 repos | ~824 | Automated safety check: Pass | Custom licence |
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Related
Categories
Questions about Font Size
What does Font Size do?
A skill your agent uses when applies to all CSS font-size declarations, particularly those using px units for body text, UI labels, and navigation. Font Size is an agent skill from thedaviddias/Front-End-Checklist. Use when applies to all CSS font-size declarations, particularly those using px units for body text, UI labels, and navigation.
When should I use Font Size?
Font Size fits situations like: applies to all CSS font-size declarations; particularly those using px units for body text; auditing mobile responsiveness and accessibility compliance.
How do I install Font Size in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill font-size -a claude-code`. Or copy the skill folder (skills/font-size in thedaviddias/Front-End-Checklist) into .claude/skills/font-size in your project. Claude Code loads it when a task matches its description.
How do I install Font Size in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill font-size -a codex`. Or copy the skill folder (skills/font-size in thedaviddias/Front-End-Checklist) into .agents/skills/font-size in your project. Codex loads it when a task matches its description.
Can I use Font Size 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 font-size -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/font-size, .gemini/skills/font-size, .github/skills/font-size and .opencode/skills/font-size in your project.
What does Font Size need to run?
SKILL.md names no scripts, command-line tools or credentials: Font Size is instructions for the agent only.
Does Font Size 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 Font Size 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 Font Size use?
Font Size 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 Font Size use?
About 896 tokens (SKILL.md is roughly 3.6k 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 651 tokens, read only when the agent opens those files.
What are the alternatives to Font Size?
Skills that share tags, products or a category with Font Size: Material Design 3 UI/UX Guide (skydashnet/material-design-3-ui-skill, 138 stars), Better Design (marvkr/better-design, 254 stars), UI Design System (try-works/role-model, 117 stars) and Building Tables (ancoleman/ai-design-components, 525 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Font Size?
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.