Learning CSS Flexbox in 24 Hours

Your complete guide to mastering flexible layouts with CSS Flexbox

24-Hour CSS Flexbox Learning Progress Tracker

Check off each hour as you complete it to track your progress through this comprehensive CSS Flexbox learning journey.

๐Ÿš€ Introduction & Prerequisites

Welcome to the most comprehensive 24-hour CSS Flexbox learning guide! This intensive course is designed to take you from complete beginner to creating sophisticated flexible layouts with CSS Flexbox.

What You'll Learn

  • Complete CSS Flexbox fundamentals and concepts
  • Flex container and item properties mastery
  • Advanced alignment and justification techniques
  • Responsive design with CSS Flexbox
  • Flexbox vs Grid decision making
  • Real-world component implementations
  • Performance optimization and best practices
  • Building a complete modern dashboard

Prerequisites

  • Basic HTML knowledge
  • Fundamental CSS understanding (selectors, properties, values)
  • Understanding of the box model
  • Basic knowledge of responsive design concepts
  • A code editor and modern web browser
Pro Tip: CSS Flexbox is a one-dimensional layout method that allows you to arrange items in a row or column. It's perfect for component-level layouts and provides powerful alignment capabilities.

Learning Strategy

Each 2-hour block includes:

  • Theory (30 minutes): Core CSS Flexbox concepts and properties
  • Practice (60 minutes): Hands-on coding and component building
  • Application (30 minutes): Real-world examples and exercises

Why Learn CSS Flexbox?

  • One-Dimensional Layouts: Perfect for rows and columns
  • Flexible Items: Items can grow, shrink, and wrap
  • Powerful Alignment: Easy centering and distribution
  • Responsive by Nature: Built-in responsive capabilities
  • Excellent Browser Support: Supported in all modern browsers
  • Component Perfect: Ideal for UI components and navigation

Hour 1-2: Flexbox Fundamentals & Setup

Understanding CSS Flexbox

CSS Flexbox (Flexible Box Layout) is a one-dimensional layout method that allows you to arrange items in a row or column with powerful alignment and distribution capabilities.

Flexbox Terminology

  • Flex Container: The parent element with display: flex
  • Flex Items: Direct children of the flex container
  • Main Axis: The primary axis along which flex items are laid out
  • Cross Axis: The axis perpendicular to the main axis
  • Main Start/End: The start and end points of the main axis
  • Cross Start/End: The start and end points of the cross axis

Your First Flexbox

/* HTML */ <div class="flex-container"> <div class="flex-item">1</div> <div class="flex-item">2</div> <div class="flex-item">3</div> </div> /* CSS */ .flex-container { display: flex; /* Creates a flex container */ gap: 10px; /* Space between flex items */ } .flex-item { background-color: #ff6b6b; color: white; padding: 20px; text-align: center; border-radius: 4px; flex: 1; /* Items grow equally */ }
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Exercise 1.1: Create Your First Flexbox

Create basic flexbox layouts:

  1. Set up a horizontal flex container with 4 items
  2. Create a vertical flex container
  3. Add gaps between flex items
  4. Experiment with different flex-direction values

Hour 1-2 Summary

Congratulations! You've successfully:

  • โœ… Understood CSS Flexbox terminology and concepts
  • โœ… Created your first flex layouts
  • โœ… Learned basic flex container and item properties
  • โœ… Compared Flexbox with other layout methods
  • โœ… Implemented gaps and basic flex behavior

Hour 3-4: Flex Container Properties

Flex Direction

Control the direction of the main axis and how flex items are arranged.

.flex-container { display: flex; /* Main axis direction */ flex-direction: row; /* Default: left to right */ flex-direction: row-reverse; /* Right to left */ flex-direction: column; /* Top to bottom */ flex-direction: column-reverse; /* Bottom to top */ } /* Examples */ .horizontal-layout { display: flex; flex-direction: row; gap: 10px; } .vertical-layout { display: flex; flex-direction: column; gap: 10px; height: 300px; } .reverse-layout { display: flex; flex-direction: row-reverse; gap: 10px; }
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flex-direction: row

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flex-direction: column

Flex Wrap

.flex-container { display: flex; /* Wrapping behavior */ flex-wrap: nowrap; /* Default: items stay on one line */ flex-wrap: wrap; /* Items wrap to new lines */ flex-wrap: wrap-reverse; /* Items wrap in reverse order */ /* Shorthand for direction and wrap */ flex-flow: row wrap; /* flex-direction flex-wrap */ flex-flow: column nowrap; } /* Responsive card layout */ .card-container { display: flex; flex-wrap: wrap; gap: 20px; padding: 20px; } .card { flex: 1 1 300px; /* grow shrink basis */ min-width: 250px; background: white; border-radius: 8px; padding: 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }

Justify Content (Main Axis Alignment)

.flex-container { display: flex; justify-content: flex-start; /* Default: items at start */ justify-content: flex-end; /* Items at end */ justify-content: center; /* Items centered */ justify-content: space-between; /* Equal space between items */ justify-content: space-around; /* Equal space around items */ justify-content: space-evenly; /* Equal space everywhere */ } /* Navigation example */ .navbar { display: flex; justify-content: space-between; align-items: center; padding: 20px; background: #333; color: white; } .nav-links { display: flex; gap: 20px; list-style: none; } /* Button group example */ .button-group { display: flex; justify-content: center; gap: 10px; margin: 20px 0; }
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justify-content: space-between

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justify-content: center

Align Items (Cross Axis Alignment)

.flex-container { display: flex; height: 200px; /* Need height to see cross-axis alignment */ align-items: stretch; /* Default: items stretch to fill */ align-items: flex-start; /* Items at cross-axis start */ align-items: flex-end; /* Items at cross-axis end */ align-items: center; /* Items centered on cross-axis */ align-items: baseline; /* Items aligned by text baseline */ } /* Perfect centering */ .center-everything { display: flex; justify-content: center; /* Horizontal centering */ align-items: center; /* Vertical centering */ height: 100vh; /* Full viewport height */ } /* Card with centered content */ .centered-card { display: flex; flex-direction: column; justify-content: center; align-items: center; min-height: 200px; text-align: center; }

Exercise 3.1: Flex Container Mastery

Create different flex layouts:

  1. A navigation bar with logo left and menu right
  2. A responsive card grid that wraps
  3. A centered hero section with perfect centering
  4. A footer with evenly distributed links

Hour 3-4 Summary

You've mastered:

  • โœ… Flex direction and axis control
  • โœ… Flex wrap for responsive layouts
  • โœ… Justify-content for main axis alignment
  • โœ… Align-items for cross axis alignment
  • โœ… Perfect centering techniques

Hour 5-6: Flex Item Properties

Flex Grow, Shrink, and Basis

Control how flex items grow, shrink, and their initial size.

/* Individual flex properties */ .flex-item { flex-grow: 1; /* How much item should grow (default: 0) */ flex-shrink: 1; /* How much item should shrink (default: 1) */ flex-basis: auto; /* Initial size before free space distribution */ } /* Shorthand syntax */ .flex-item { flex: 1; /* flex: 1 1 0% (grow shrink basis) */ flex: 0 1 auto; /* Default values */ flex: none; /* flex: 0 0 auto (inflexible) */ flex: auto; /* flex: 1 1 auto (flexible) */ } /* Common patterns */ .sidebar { flex: 0 0 250px; /* Fixed width sidebar */ } .main-content { flex: 1; /* Takes remaining space */ } .flexible-item { flex: 1 1 200px; /* Grows/shrinks, min 200px */ } .fixed-item { flex: none; /* Doesn't grow or shrink */ width: 100px; }
Fixed 100px
Flexible
2x Flexible

flex: 0 0 100px | flex: 1 | flex: 2

Align Self

.flex-container { display: flex; align-items: center; /* Default alignment for all items */ height: 150px; } .flex-item { /* Override container's align-items for individual items */ align-self: auto; /* Use container's align-items */ align-self: flex-start; /* Align to cross-axis start */ align-self: flex-end; /* Align to cross-axis end */ align-self: center; /* Center on cross-axis */ align-self: baseline; /* Align to text baseline */ align-self: stretch; /* Stretch to fill container */ } /* Example: Mixed alignment */ .mixed-alignment .item-1 { align-self: flex-start; } .mixed-alignment .item-2 { align-self: center; } .mixed-alignment .item-3 { align-self: flex-end; }

Order Property

.flex-item { order: 0; /* Default order */ } /* Change visual order without changing HTML */ .item-first { order: -1; /* Appears first */ } .item-last { order: 1; /* Appears last */ } /* Responsive reordering */ @media (max-width: 768px) { .sidebar { order: 2; /* Move sidebar after main content on mobile */ } .main-content { order: 1; /* Main content first on mobile */ } .header { order: 0; /* Header stays at top */ } }

Exercise 5.1: Flex Item Control

Create flexible layouts:

  1. A three-column layout with fixed sidebars and flexible main
  2. A card layout where some cards are twice as wide
  3. A responsive layout that reorders on mobile
  4. A mixed alignment layout with different item alignments

Hour 5-6 Summary

You've learned:

  • โœ… Flex grow, shrink, and basis properties
  • โœ… Flex shorthand syntax and common patterns
  • โœ… Individual item alignment with align-self
  • โœ… Visual reordering with the order property
  • โœ… Responsive reordering techniques

Hour 7-8: Alignment & Justification

Complete Alignment Guide

/* Main Axis Alignment (justify-content) */ .flex-container { display: flex; justify-content: flex-start; /* Items at start (default) */ justify-content: flex-end; /* Items at end */ justify-content: center; /* Items centered */ justify-content: space-between; /* Space between items */ justify-content: space-around; /* Space around items */ justify-content: space-evenly; /* Equal space everywhere */ } /* Cross Axis Alignment (align-items) */ .flex-container { align-items: stretch; /* Items stretch (default) */ align-items: flex-start; /* Items at start */ align-items: flex-end; /* Items at end */ align-items: center; /* Items centered */ align-items: baseline; /* Items aligned by baseline */ } /* Multi-line Alignment (align-content) */ .flex-container { flex-wrap: wrap; align-content: stretch; /* Lines stretch (default) */ align-content: flex-start; /* Lines at start */ align-content: flex-end; /* Lines at end */ align-content: center; /* Lines centered */ align-content: space-between; /* Space between lines */ align-content: space-around; /* Space around lines */ align-content: space-evenly; /* Equal space everywhere */ }

Perfect Centering Techniques

/* Method 1: Flexbox centering */ .center-flex { display: flex; justify-content: center; align-items: center; min-height: 100vh; } /* Method 2: Margin auto */ .center-margin { display: flex; min-height: 100vh; } .center-margin .centered-item { margin: auto; } /* Method 3: Flex direction column */ .center-column { display: flex; flex-direction: column; justify-content: center; align-items: center; min-height: 100vh; } /* Centering with offset */ .center-with-offset { display: flex; justify-content: center; align-items: center; min-height: 100vh; padding-top: 60px; /* Account for fixed header */ }

Hour 7-8 Summary

You've mastered:

  • โœ… Complete alignment control in all directions
  • โœ… Multi-line alignment with align-content
  • โœ… Perfect centering techniques
  • โœ… Advanced alignment patterns

Hour 9-10: Responsive Flexbox Layouts

Mobile-First Flexbox Design

/* Mobile-first approach */ .responsive-layout { display: flex; flex-direction: column; /* Stack on mobile */ gap: 20px; padding: 20px; } /* Tablet */ @media (min-width: 768px) { .responsive-layout { flex-direction: row; /* Side by side on tablet+ */ flex-wrap: wrap; } .responsive-item { flex: 1 1 45%; /* Two columns on tablet */ } } /* Desktop */ @media (min-width: 1024px) { .responsive-item { flex: 1 1 30%; /* Three columns on desktop */ } } /* Large screens */ @media (min-width: 1200px) { .responsive-item { flex: 1 1 22%; /* Four columns on large screens */ } }

Flexible Card Layouts

/* Responsive card grid */ .card-grid { display: flex; flex-wrap: wrap; gap: 20px; padding: 20px; } .card { flex: 1 1 300px; /* Minimum 300px, grows to fill */ max-width: 400px; /* Maximum width */ background: white; border-radius: 8px; padding: 20px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); } /* Responsive navigation */ .nav-responsive { display: flex; justify-content: space-between; align-items: center; padding: 20px; } .nav-links { display: flex; gap: 20px; } @media (max-width: 768px) { .nav-responsive { flex-direction: column; gap: 20px; } .nav-links { flex-direction: column; text-align: center; gap: 10px; } }

Hour 9-10 Summary

You've learned:

  • โœ… Mobile-first responsive design with Flexbox
  • โœ… Flexible card layouts that adapt
  • โœ… Responsive navigation patterns
  • โœ… Breakpoint strategies for Flexbox

Hour 11-12: Advanced Flexbox Techniques

Nested Flexbox Layouts

/* Complex nested layout */ .page-layout { display: flex; flex-direction: column; min-height: 100vh; } .header { display: flex; justify-content: space-between; align-items: center; padding: 20px; background: #333; color: white; } .main-section { display: flex; flex: 1; /* Takes remaining space */ } .sidebar { flex: 0 0 250px; background: #f5f5f5; padding: 20px; } .content { flex: 1; padding: 20px; display: flex; flex-direction: column; gap: 20px; } .content-grid { display: flex; flex-wrap: wrap; gap: 20px; } .footer { display: flex; justify-content: center; align-items: center; padding: 20px; background: #333; color: white; }

Hour 11-12 Summary

You've learned:

  • โœ… Complex nested Flexbox layouts
  • โœ… Combining Flexbox with other layout methods
  • โœ… Advanced responsive patterns

Hour 13-14: Flexbox vs Grid & When to Use

Decision Matrix: Flexbox vs Grid

Use CSS Flexbox when:
  • You need one-dimensional layouts (either rows OR columns)
  • You want items to grow/shrink based on content
  • You need to align items within a container
  • You're building navigation bars or button groups
  • You want equal-height columns
  • You need to distribute space between items
Use CSS Grid when:
  • You need two-dimensional layouts (rows AND columns)
  • You want to define the overall page structure
  • You need precise control over item placement
  • You're creating complex, asymmetrical layouts
  • You want to overlap elements

Hour 13-14 Summary

You've learned:

  • โœ… When to choose Flexbox vs Grid
  • โœ… Combining both layout methods
  • โœ… Best practices for layout decisions

Hour 15-16: Real-World Component Patterns

Navigation Components

/* Horizontal Navigation */ .navbar { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; background: #333; color: white; } .nav-brand { font-size: 1.5rem; font-weight: bold; } .nav-links { display: flex; gap: 2rem; list-style: none; } .nav-actions { display: flex; gap: 1rem; align-items: center; } /* Breadcrumb Navigation */ .breadcrumb { display: flex; align-items: center; gap: 0.5rem; padding: 1rem 0; } .breadcrumb-item { display: flex; align-items: center; gap: 0.5rem; } .breadcrumb-separator { color: #666; }

Card Components

/* Flexible Card Layout */ .card { display: flex; flex-direction: column; background: white; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); overflow: hidden; } .card-header { padding: 1.5rem; border-bottom: 1px solid #eee; } .card-body { flex: 1; /* Takes remaining space */ padding: 1.5rem; } .card-footer { padding: 1rem 1.5rem; background: #f8f9fa; display: flex; justify-content: space-between; align-items: center; } /* Horizontal Card */ .card-horizontal { flex-direction: row; max-width: 600px; } .card-image { flex: 0 0 200px; background-size: cover; background-position: center; } .card-content { flex: 1; display: flex; flex-direction: column; }

Form Components

/* Form Layout */ .form-group { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1rem; } .form-row { display: flex; gap: 1rem; } .form-row .form-group { flex: 1; } /* Input Group */ .input-group { display: flex; border: 1px solid #ddd; border-radius: 4px; overflow: hidden; } .input-group-prepend, .input-group-append { display: flex; align-items: center; padding: 0.5rem 1rem; background: #f8f9fa; border-right: 1px solid #ddd; } .input-group input { flex: 1; border: none; padding: 0.5rem; outline: none; } /* Button Group */ .button-group { display: flex; gap: 0.5rem; } .button-group.vertical { flex-direction: column; } .button-group.justified { width: 100%; } .button-group.justified .btn { flex: 1; }

Hour 15-16 Summary

You've learned:

  • โœ… Navigation component patterns
  • โœ… Flexible card layouts
  • โœ… Form and input group components
  • โœ… Button group patterns

Hour 17-18: Flexbox Animation & Transitions

Animating Flex Properties

/* Smooth flex transitions */ .flex-item { flex: 1; transition: flex 0.3s ease; } .flex-item:hover { flex: 2; /* Grows on hover */ } /* Animated flex direction */ .flex-container { display: flex; flex-direction: row; transition: flex-direction 0.3s ease; } .flex-container.vertical { flex-direction: column; } /* Smooth gap changes */ .responsive-flex { display: flex; gap: 10px; transition: gap 0.3s ease; } @media (min-width: 768px) { .responsive-flex { gap: 30px; } }

Hour 17-18 Summary

You've learned:

  • โœ… Animating flex properties smoothly
  • โœ… Transition effects for responsive changes
  • โœ… Interactive flex animations

Hour 19-20: Browser Support & Fallbacks

Progressive Enhancement

/* Feature detection and fallbacks */ .layout { /* Fallback for older browsers */ display: block; } /* Modern browsers with Flexbox support */ @supports (display: flex) { .layout { display: flex; gap: 20px; } } /* Vendor prefixes for older browsers */ .flex-container { display: -webkit-box; /* OLD - iOS 6-, Safari 3.1-6 */ display: -moz-box; /* OLD - Firefox 19- */ display: -ms-flexbox; /* TWEENER - IE 10 */ display: -webkit-flex; /* NEW - Chrome */ display: flex; /* NEW, Spec - Opera 12.1, Firefox 20+ */ }

Hour 19-20 Summary

You've learned:

  • โœ… Browser support strategies
  • โœ… Progressive enhancement with Flexbox
  • โœ… Vendor prefixes and fallbacks

Hour 21-22: Performance & Best Practices

Flexbox Performance Tips

Performance Best Practices:
  • Use flex-basis instead of width/height when possible
  • Minimize nested flex containers
  • Use will-change for animated flex properties
  • Avoid frequent flex-wrap changes
  • Use contain property for isolated flex containers

Hour 21-22 Summary

You've learned:

  • โœ… Performance optimization techniques
  • โœ… Best practices for maintainable code
  • โœ… Debugging flexbox layouts

Hour 23-24: Complete Dashboard Project

Final Project: Modern Dashboard Layout

Let's build a complete modern dashboard using everything we've learned about CSS Flexbox.

/* Complete dashboard layout */ .dashboard { display: flex; flex-direction: column; min-height: 100vh; font-family: 'Segoe UI', sans-serif; } .dashboard-header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; background: #2c3e50; color: white; box-shadow: 0 2px 4px rgba(0,0,0,0.1); } .dashboard-brand { display: flex; align-items: center; gap: 1rem; font-size: 1.5rem; font-weight: bold; } .dashboard-nav { display: flex; gap: 2rem; } .dashboard-actions { display: flex; gap: 1rem; align-items: center; } .dashboard-main { display: flex; flex: 1; } .dashboard-sidebar { flex: 0 0 250px; background: #34495e; color: white; padding: 2rem 0; } .sidebar-nav { display: flex; flex-direction: column; } .sidebar-item { display: flex; align-items: center; gap: 1rem; padding: 1rem 2rem; color: white; text-decoration: none; transition: background 0.3s ease; } .sidebar-item:hover { background: rgba(255,255,255,0.1); } .dashboard-content { flex: 1; padding: 2rem; background: #ecf0f1; } .content-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; } .stats-grid { display: flex; gap: 2rem; margin-bottom: 2rem; flex-wrap: wrap; } .stat-card { flex: 1; min-width: 200px; background: white; padding: 2rem; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); display: flex; flex-direction: column; gap: 1rem; } .stat-value { font-size: 2.5rem; font-weight: bold; color: #2c3e50; } .stat-label { color: #7f8c8d; font-size: 0.9rem; } .charts-section { display: flex; gap: 2rem; flex-wrap: wrap; } .chart-card { flex: 1; min-width: 300px; background: white; padding: 2rem; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); } .chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; padding-bottom: 1rem; border-bottom: 1px solid #ecf0f1; } /* Responsive adjustments */ @media (max-width: 1024px) { .dashboard-main { flex-direction: column; } .dashboard-sidebar { flex: none; order: 2; } .sidebar-nav { flex-direction: row; overflow-x: auto; } .sidebar-item { white-space: nowrap; } } @media (max-width: 768px) { .dashboard-header { flex-direction: column; gap: 1rem; text-align: center; } .stats-grid { flex-direction: column; } .charts-section { flex-direction: column; } .dashboard-content { padding: 1rem; } }

Final Challenge: Complete Dashboard

Build a full dashboard with:

  1. Responsive header with navigation and actions
  2. Collapsible sidebar with navigation items
  3. Main content area with statistics cards
  4. Chart sections with flexible layouts
  5. Mobile-responsive design
  6. Smooth animations and transitions
  7. Accessibility considerations
  8. Performance optimizations

Hour 23-24 Summary

Congratulations! You've built a complete dashboard using:

  • โœ… Complex nested flexbox layouts
  • โœ… Responsive design principles
  • โœ… Component-based layout patterns
  • โœ… Modern CSS Flexbox techniques
  • โœ… Performance optimizations
  • โœ… Cross-browser compatibility

๐ŸŽฏ Resources & Next Steps

Congratulations! ๐ŸŽ‰

You've successfully completed the 24-hour CSS Flexbox learning journey! You now have the skills to create flexible, responsive layouts and can confidently call yourself a CSS Flexbox expert.

What You've Accomplished

Amazing Progress! In just 24 hours, you've learned:
  • Complete CSS Flexbox mastery from basics to advanced
  • Responsive design with flexible layout techniques
  • Real-world component patterns and implementations
  • Performance optimization and browser compatibility
  • Built a complete modern dashboard layout

Next Steps for Continued Learning

Immediate Next Steps (Week 1-2)

  • Practice Daily: Recreate UI components from popular websites
  • Experiment: Try different flexbox patterns and combinations
  • Join Communities: CSS-focused forums and Discord servers
  • Share Your Work: Post your layouts on CodePen or GitHub

Intermediate Topics (Month 1-3)

  • CSS Container Queries for component-based responsive design
  • Advanced animation techniques with Flexbox
  • CSS Flexbox with CSS Custom Properties (variables)
  • Accessibility best practices for flex layouts
  • Flexbox in design systems and component libraries

Advanced Topics (Month 3-6)

  • CSS Flexbox with JavaScript frameworks (React, Vue, etc.)
  • Performance optimization for complex flex layouts
  • Advanced responsive patterns and intrinsic design
  • CSS Flexbox for print layouts and multi-column designs
  • Building design systems with Flexbox components

Recommended Resources

Official Documentation

Tools and Generators

Learning Resources

Project Ideas for Practice

  1. Navigation Components: Create various navigation patterns
  2. Card Layouts: Build responsive card grids and components
  3. Form Layouts: Design flexible form components
  4. Dashboard Interface: Create admin dashboards with widgets
  5. Landing Pages: Build modern landing pages with hero sections
  6. Mobile Apps: Design mobile-first app interfaces
  7. E-commerce: Create product listings and shopping interfaces
  8. Portfolio: Build a responsive portfolio website
Remember: CSS Flexbox is perfect for one-dimensional layouts and component-level design. Combine it with CSS Grid for complete layout solutions. Always test your layouts across different browsers and devices.

Final Tips for Success

  • Start Simple: Begin with basic flex containers and gradually add complexity
  • Mobile First: Always design for mobile devices first
  • Use DevTools: Browser flexbox inspectors are invaluable for debugging
  • Semantic HTML: Flexbox works best with well-structured HTML
  • Accessibility: Ensure your layouts work with screen readers
  • Performance: Monitor layout performance, especially on mobile
  • Fallbacks: Provide fallbacks for older browsers when needed
  • Documentation: Comment your complex flex layouts for future reference
You're Now a CSS Flexbox Master! You have the foundation to create any flexible layout imaginable. Flexbox is your tool for building modern, responsive components that work everywhere!

Browser Support Summary

  • Excellent Support: Chrome 29+, Firefox 28+, Safari 9+, Edge 12+
  • Partial Support: IE 10-11 (with -ms- prefix and some limitations)
  • Mobile Support: iOS Safari 9+, Android Chrome 44+
  • Global Usage: 98%+ of users have CSS Flexbox support
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