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FrontendPrep
Frontend Challenges & Code Reviews

Projects

Turn real specifications and interactive previews into production-quality code. Build independently for free, or upgrade to PRO for line-by-line rubric feedback from senior staff reviewers.

All Challenges 100% Free to BuildCode Reviewed by Senior EngineersPRO ONLY
How It Works

Build & Get Reviewed Like a Real Team

Interactive Product Detail Page
AdvancedUI Section
NEW

Interactive Product Detail Page

Production-grade interactive product detail page & editorial audio collection featuring coordinate-clamped loupe zoom, 4-angle gallery, dynamic variant matrix, reactive pricing, and slide-out cart drawer.

Any StackHTML5CSS Grid & TransformsJavaScriptWAI-ARIATailwind CSS
Senior ReviewPRO
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Interactive Sliding Tabs Component
JuniorUI Component
NEW

Interactive Sliding Tabs Component

Accessible tabbed navigation with fluid sliding capsule indicator, count badges, and keyboard navigation.

Any StackHTML5CSS TransformsJavaScriptWAI-ARIA
Senior ReviewPRO
Start
SaaS Pricing Tier System
IntermediateUI Section
NEW

SaaS Pricing Tier System

High-converting pricing grid with monthly/annual billing cycle toggle, calculated savings pills, and feature matrices.

Any StackHTML5CSS GridJavaScriptResponsive UI
Senior ReviewPRO
Start
Editorial Blog & Card Stream
IntermediateUI Section
NEW

Editorial Blog & Card Stream

Publication card system with fixed 16:9 aspect ratios, real-time search filtering, grid/list toggle, and bookmarks.

Any StackHTML5CSS Aspect RatioJavaScriptGrid & List
Senior ReviewPRO
Start
Editorial Blog & Magazine Listing Section
IntermediateUI Section
NEW

Editorial Blog & Magazine Listing Section

Modern publication section inspired by Kendi with zero-CLS aspect ratios, live category filtering, grid/list switcher, and bookmark persistence.

Any StackHTML5CSS Grid & FlexboxJavaScriptWAI-ARIA
Senior ReviewPRO
Start
Advanced Multi-Carousel & Kinetic Motion Suite
AdvancedUI Section
NEW

Advanced Multi-Carousel & Kinetic Motion Suite

Production-ready multi-carousel suite featuring Focus Carousel Pro, Testimonial Riff 3D Stack, Velocity Kinetic Momentum Slider, and Modern Editorial Showcase.

Any StackHTML5CSS 3D TransformsJavaScriptWAI-ARIAPointer Events
Senior ReviewPRO
Start
Tooltip UI Component System
IntermediateUI Component

Tooltip UI Component System

Enterprise non-modal tooltip with 4-way positioning, boundary collision flipping, and full WAI-ARIA keyboard support.

Any StackHTML5CSS TransformsJavaScriptWAI-ARIA
Senior ReviewPRO
Start
Accessible Accordion Component
IntermediateUI Component

Accessible Accordion Component

Collapsible accordion with zero-jank CSS Grid height animations, single/multi-expand modes, and keyboard navigation.

Any StackHTML5CSS GridJavaScript / ReactWAI-ARIA
Senior ReviewPRO
Start
Accessible Modal & Dialog System
IntermediateUI Component

Accessible Modal & Dialog System

Production-ready dialog overlay with focus trap looping, backdrop click dismissal, ESC listener, and scroll lock.

Any StackHTML5CSS DialogJavaScript / ReactWAI-ARIA
Senior ReviewPRO
Start