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 layout rules.
Install Horizontal Scroll
$ npx skills add thedaviddias/Front-End-Checklist --skill horizontal-scroll -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist horizontal-scroll --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/horizontal-scroll .claude/skills/horizontal-scroll && 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 "horizontal-scroll" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/horizontal-scroll into .claude/skills/horizontal-scroll/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horizontal-scroll", 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/horizontal-scrollType 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 horizontal-scroll -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist horizontal-scroll --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/horizontal-scroll .agents/skills/horizontal-scroll && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "horizontal-scroll" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/horizontal-scroll into .agents/skills/horizontal-scroll/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horizontal-scroll", 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 horizontal-scroll -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist horizontal-scroll --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/horizontal-scroll .cursor/skills/horizontal-scroll && 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 "horizontal-scroll" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/horizontal-scroll into .cursor/skills/horizontal-scroll/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horizontal-scroll", 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/horizontal-scroll--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 horizontal-scroll -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist horizontal-scroll --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/horizontal-scroll .gemini/skills/horizontal-scroll && 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 "horizontal-scroll" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/horizontal-scroll into .gemini/skills/horizontal-scroll/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horizontal-scroll", 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 horizontal-scrollInstalls 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 horizontal-scroll -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/horizontal-scroll .github/skills/horizontal-scroll && 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 "horizontal-scroll" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/horizontal-scroll into .github/skills/horizontal-scroll/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horizontal-scroll", 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 horizontal-scroll -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 horizontal-scroll --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/horizontal-scroll .opencode/skills/horizontal-scroll && 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 "horizontal-scroll" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/horizontal-scroll into .opencode/skills/horizontal-scroll/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "horizontal-scroll", 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
horizontal-scroll- GitHub stars
- 74k
- Token cost
- ~905 tokens
- SKILL.md length
- 441 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 layout rules.
- Applies to all CSS layout rules
- 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
- Auditing responsive design
What it does
Horizontal Scroll is an agent skill from thedaviddias/Front-End-Checklist. Use when applies to all CSS layout rules. Check width, min-width, fixed pixel values on containers, overflow, white-space, and word-break properties. Use when auditing responsive design or WCAG 2.1 Level AA compliance. Test at 320px viewport width and at 400% browser zoom.
Its SKILL.md is about 910 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 Accessibility and Responsive design. 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 layout rules
- Auditing responsive design
- WCAG 2.1 Level AA compliance
Example prompts
- “/horizontal-scroll”
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
Horizontal Scroll loads about 905 tokens when it runs, and up to ~1.6k if it reads all its reference files. Until then it costs about 75 tokens; SKILL.md has 441 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). 441 words, ~905 tokens.
Download SKILL.mdSave it as
.claude/skills/horizontal-scroll/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- horizontal-scroll
- description
- Use when applies to all CSS layout rules. Check `width`, `min-width`, fixed pixel values on containers, `overflow`, `white-space`, and `word-break` properties. Use when auditing responsive design or WCAG 2.1 Level AA compliance. Test at 320px viewport width and at 400% browser zoom.
- metadata.category
- css
- metadata.priority
- medium
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 10
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/css/horizontal-scroll
Prevent horizontal scrolling
Low-vision users who cannot read at standard zoom levels increase browser zoom to 200–400%. At these zoom levels, a 1280px-wide page becomes effectively 320px wide. If elements overflow the viewport, users must scroll both vertically and horizontally to read content — this is exhausting and error-prone with a screen magnifier. WCAG 2.1 SC 1.4.10 (Reflow) specifically addresses this, requiring that all content is available without two-dimensional scrolling at 400% zoom.
Quick Reference
- Pages must not produce horizontal scrollbars at viewport widths of 320px and above — WCAG 2.1 SC 1.4.10 (Reflow)
- WCAG 2.1 SC 1.4.10 requires content to reflow at 400% zoom (equivalent to 320px CSS width) without horizontal scroll
- Common causes: fixed-width elements wider than the viewport,
width: 100vwnot accounting for scrollbar width, long unbreakable strings,white-space: nowrap - Use
max-width: 100%on images and media,overflow-wrap: break-wordon text containers, and fluid layout units
Check
Test the page at a 320px CSS viewport width (equivalent to 400% browser zoom on a 1280px screen). Look for horizontal scrollbars or content overflowing outside the viewport. Specifically check: (1) elements with fixed width values in px that exceed the viewport; (2) min-width values that prevent shrinking; (3) images or media without max-width: 100%; (4) white-space: nowrap on text that causes overflow; (5) width: 100vw on elements (scrollbar width causes overflow); (6) long URLs or unbreakable strings in content areas.
Show full SKILL.md (212 more words)Show less
Fix
(1) Replace fixed width: Npx on layout containers with max-width: Npx plus width: 100%. (2) Add max-width: 100% and height: auto to all images and media. (3) Apply overflow-wrap: break-word (with fallback word-wrap: break-word) to text containers that may contain long strings. (4) Replace width: 100vw with width: 100% on full-width elements (avoid scrollbar overflow). (5) Use CSS Grid or Flexbox with flex-wrap: wrap for multi-column layouts. (6) For data tables, wrap in a scrollable container: overflow-x: auto on the table wrapper, not the page body.
Explain
WCAG 2.1 SC 1.4.10 (Reflow, Level AA) requires that content does not require two-dimensional scrolling when displayed at a width of 320 CSS pixels or a height of 256 CSS pixels. This corresponds to 400% zoom on a 1280×1024 display. Exceptions are made for content that requires two-dimensional layout for usage (e.g., data tables, map interfaces, video). For all other content — body text, navigation, forms, images — horizontal scrolling is a barrier for screen magnification users who cannot see the full page width.
Code Review
Review stylesheets, component styles, and responsive states related to Prevent horizontal scrolling. 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/horizontal-scroll
© 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/horizontal-scroll of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Horizontal Scroll 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 |
|---|---|---|---|---|---|---|
| Horizontal Scroll this skillthedaviddias/Front-End-Checklist | 74k | — | ~905 | Automated safety check: Pass | MIT | |
| Material Design 3 UI/UX Guideskydashnet/material-design-3-ui-skill | 135 | — | ~3k | Automated safety check: Pass | MIT | |
| Better Designmarvkr/better-design | 254 | — | ~1.2k | Automated safety check: Pass | MIT | |
| UI Design Systemtry-works/role-model | 118 | — | ~5k | Automated safety check: Pass | MIT | |
| Building Tablesancoleman/ai-design-components | 526 | — | ~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 Horizontal Scroll
What does Horizontal Scroll do?
A skill your agent uses when applies to all CSS layout rules. Horizontal Scroll is an agent skill from thedaviddias/Front-End-Checklist. Use when applies to all CSS layout rules.
When should I use Horizontal Scroll?
Horizontal Scroll fits situations like: applies to all CSS layout rules; auditing responsive design; WCAG 2.1 Level AA compliance.
How do I install Horizontal Scroll in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill horizontal-scroll -a claude-code`. Or copy the skill folder (skills/horizontal-scroll in thedaviddias/Front-End-Checklist) into .claude/skills/horizontal-scroll in your project. Claude Code loads it when a task matches its description.
How do I install Horizontal Scroll in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill horizontal-scroll -a codex`. Or copy the skill folder (skills/horizontal-scroll in thedaviddias/Front-End-Checklist) into .agents/skills/horizontal-scroll in your project. Codex loads it when a task matches its description.
Can I use Horizontal Scroll 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 horizontal-scroll -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/horizontal-scroll, .gemini/skills/horizontal-scroll, .github/skills/horizontal-scroll and .opencode/skills/horizontal-scroll in your project.
What does Horizontal Scroll need to run?
SKILL.md names no scripts, command-line tools or credentials: Horizontal Scroll is instructions for the agent only.
Does Horizontal Scroll 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 Horizontal Scroll 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 Horizontal Scroll use?
Horizontal Scroll 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 Horizontal Scroll use?
About 905 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 657 tokens, read only when the agent opens those files.
What are the alternatives to Horizontal Scroll?
Skills that share tags, products or a category with Horizontal Scroll: Material Design 3 UI/UX Guide (skydashnet/material-design-3-ui-skill, 135 stars), Better Design (marvkr/better-design, 254 stars), UI Design System (try-works/role-model, 118 stars) and Building Tables (ancoleman/ai-design-components, 526 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Horizontal Scroll?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,412 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.