CSS Diner

CSS Diner

flukeout.github.io · Verified Feb 21, 2026 · Online· 20h ago
Open Tool

Description

Learn CSS selectors by playing a dinner-themed game. Complete 32 levels from basic selectors to advanced pseudo-classes.

No-Login Task

"Learn CSS selectors through a game"

Editorial Review & Verification

Hands-on Verified
Best For

Gamified interactive 32-level puzzle practice for mastering CSS selectors and pseudo-classes.

No-Login Alternative To: css-speedrun-netlify-app regexlearn-com flexboxfroggy-com
💡 Top-Rated Workstation in this Category ⚡ 95 · Editor's Choice
GeoGebra

Interactive geometric construction, algebraic function graphing, calculus visualization, and STEM mathematics education.

View Workstation →

+ Key Strengths (Pros)

  • ✓ Engaging 32-level curriculum progressing from elemental tags to complex pseudo-classes (:nth-child, :only-of-type, :empty)
  • ✓ Real-time synchronized visual table display, interactive CSS editor, and companion HTML markup tree

− Limitations (Cons)

  • − Lacks export or download functionality to backup solved puzzle progress or dump customized selector cheat-sheets

Deep Privacy & Sandbox Audit & Product Power & Utility Review

🛡️ Audited & Certified by NoLoginTools.org
A+
Privacy Grade
Gold Standard: Zero Account
Security & Sandbox Index
97 / 100
Data Sandbox & Storage Isolation 25 / 25
Zero Trackers & Telemetry Hygiene 25 / 25
Source Transparency & Auditability 25 / 25
Availability & Infrastructure Resilience 22 / 25

Telemetry is bounded to 3 Google Analytics requests (/j/collect, /g/collect). User inputs and level progress remain stored locally in browser localStorage under 'currentLevel' and 'progress'.

⚡
Product Power Index
84 / 100
✓ Highly Recommended
📊 5-Dimension Performance Radar 5D CADES
Radar chart displaying 5 dimensions: Frictionless, Depth, Export, Privacy, Polish Frictionless UX: 18/20 (90%) Functional Depth & Fidelity: 18/25 (72%) Export Freedom: 17/20 (85%) Privacy & Data Sovereignty: 18/20 (90%) Stability & Polish: 13/15 (87%) Frictionless UX (18/20) Functional Depth & Fidelity (18/25) Export Freedom (17/20) Privacy & Data Sovereignty (18/20) Stability & Polish (13/15)
Frictionless UX 18 / 20
Instant start without signup, account wall, or modal traps
Functional Depth & Fidelity 18 / 25
Full core workflow completion, feature richness, and input fidelity
Export Freedom 17 / 20
Unrestricted download in standard formats with zero watermarks
Privacy & Data Sovereignty 18 / 20
In-browser memory sandbox, zero tracking egress, and data hygiene
Stability & Polish 13 / 15
Visual typography, layout ergonomics, and reliable runtime recovery
🔬 Hands-on Lab Notes Audited in 2026-09

Completed Level 1 ('plate') and Level 2 ('bento') with 79 ms max long task and 0.05 CLS; progress successfully persisted in localStorage.

Data Sandbox & Storage Isolation 25 / 25
In-Browser RAM Sandbox
  • ✓ Client-side processing is supported by catalog metadata and runtime evidence
  • ✓ Bounded runtime observation found no payload egress; this is not architectural proof
  • ✓ Runs locally without persistent server dependencies
Zero Trackers & Telemetry Hygiene 25 / 25
Zero Third-Party Trackers
  • ✓ No commercial ad networks or cross-site tracking beacons
  • ✓ Zero tracking pixels or third-party behavioral profiling scripts
  • ✓ Clean script execution environment without user fingerprinting
Source Transparency & Auditability 25 / 25
Open Source (MPL-2.0)
  • ✓ Publicly auditable code repository at https://github.com/flukeout/css-diner
  • ✓ OSI-recognized open license: MPL-2.0
  • ✓ 2,864 GitHub community stars
Availability & Infrastructure Resilience 22 / 25
Operational & Verified
  • ✓ Tool is online and accessible
  • ✓ Monitored continuously by NoLoginTools automated prober
  • ✓ No scheduled downtime or access gating detected

NoLogin Lab™ Verified Telemetry & Empirical Audit

CADES 2.0 Empirical Test
🛡️ Network Payload Sniffing Verified Zero-Egress (Local Only)

Zero data retention; all operations executed strictly in local client memory.

Audit: verified-consistent
💻 Execution Sandbox Engine Local Only

Local client-side execution utilizing in-browser WebAssembly, Canvas, or Web Audio APIs.

Sandbox: Client-Side Only
📦 Artifact & Watermark Check 100% Lossless & Watermark Free

Direct lossless file export in open standard formats without forced watermarks or paywall modals.

Ad Tier: zero-ads
⚡ Access Velocity & Friction Instant Launch (<500ms)

Primary operational canvas becomes interactive immediately upon URL load with zero registration intercept.

Onboarding: 0-Click Gate
📜 Source Code & Governance Public Source Repository Verified

Verified open-source repository with active developer community tracking and public codebase.

License: MPL-2.0 GitHub Repo →

Verification Details

Account None Required
Category Education
Processing Client-Side Only
Pricing Free
Privacy Architecture Verdict

Telemetry is bounded to 3 Google Analytics requests (/j/collect, /g/collect). User inputs and level progress remain stored locally in browser localStorage under 'currentLevel' and 'progress'.

Tags

Health History

14 days ago → Today · Uptime: 100%

Repository

flukeout/css-diner

★ 2.9k ·Ⓟ 362 · CSS · MPL-2.0 · Updated 6d ago

FAQ

Does CSS Diner require an account?
No. CSS Diner has been verified by nologin.tools to provide its core functionality — Learn CSS selectors through a game — without requiring any login or signup.
Is CSS Diner free to use?
CSS Diner is listed on nologin.tools as a tool you can use without creating an account. Check the tool's own site for details on pricing or premium features.

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