CSS Stylesheet Generator
Generate complete CSS stylesheets with design tokens, CSS reset, and custom properties. Configure colors, typography, spacing, and breakpoints for your design system.
Quick Presets
Design Tokens
Output Options
Generated CSS
/* CSS Reset */
*, *::before, *::after {
box-sizing: border-box;
margin: 0;
padding: 0;
}
html {
-webkit-text-size-adjust: 100%;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
body {
min-height: 100vh;
line-height: var(--line-height-normal);
font-family: var(--font-base);
}
img, picture, video, canvas, svg {
display: block;
max-width: 100%;
}
input, button, textarea, select {
font: inherit;
}
p, h1, h2, h3, h4, h5, h6 {
overflow-wrap: break-word;
}
:root {
/* Color Palette */
--primary-50: #f5f9ff;
--primary-100: #e2ecfe;
--primary-200: #bad3fc;
--primary-300: #93bafa;
--primary-400: #6ca1f8;
--primary-500: #3b82f6;
--primary-600: #326fd1;
--primary-700: #295bac;
--primary-800: #204887;
--primary-900: #183462;
--secondary-50: #f7f7fe;
--secondary-100: #e8e8fd;
--secondary-200: #c8c9fa;
--secondary-300: #a9abf7;
--secondary-400: #8a8cf5;
--secondary-500: #6366f1;
--secondary-600: #5457cd;
--secondary-700: #4547a9;
--secondary-800: #363885;
--secondary-900: #282960;
--accent-50: #f9f7ff;
--accent-100: #eee7fe;
--accent-200: #d6c6fc;
--accent-300: #bfa5fa;
--accent-400: #a885f8;
--accent-500: #8b5cf6;
--accent-600: #764ed1;
--accent-700: #6140ac;
--accent-800: #4c3387;
--accent-900: #382562;
--neutral-50: #f7f8f9;
--neutral-100: #e8eaee;
--neutral-200: #c9ced6;
--neutral-300: #aab3bf;
--neutral-400: #8b97a8;
--neutral-500: #64748b;
--neutral-600: #556376;
--neutral-700: #465161;
--neutral-800: #37404c;
--neutral-900: #282e38;
/* Typography */
--font-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
--font-heading: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
--font-mono: ui-monospace, SFMono-Regular, 'SF Mono', Menlo, monospace;
--text-xs: 0.75rem;
--text-sm: 0.875rem;
--text-base: 1rem;
--text-lg: 1.125rem;
--text-xl: 1.25rem;
--text-2xl: 1.5rem;
--text-3xl: 1.875rem;
--font-normal: 400;
--font-medium: 500;
--font-semibold: 600;
--font-bold: 700;
--line-height-tight: 1.25;
--line-height-normal: 1.5;
--line-height-relaxed: 1.75;
/* Spacing Scale */
--space-0: 0px;
--space-0-5: 2px;
--space-1: 4px;
--space-2: 8px;
--space-3: 12px;
--space-4: 16px;
--space-6: 24px;
--space-8: 32px;
--space-12: 48px;
--space-16: 64px;
--space-20: 80px;
--space-24: 96px;
/* Breakpoints */
--breakpoint-sm: 640px;
--breakpoint-md: 768px;
--breakpoint-lg: 1024px;
--breakpoint-xl: 1280px;
--breakpoint-2xl: 1536px;
}
/* Typography Defaults */
body {
font-family: var(--font-base);
font-size: var(--text-base);
font-weight: var(--font-normal);
line-height: var(--line-height-normal);
color: var(--neutral-900);
}
h1, h2, h3, h4, h5, h6 {
font-family: var(--font-heading);
font-weight: var(--font-bold);
line-height: var(--line-height-tight);
}
h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }
h5 { font-size: var(--text-base); }
h6 { font-size: var(--text-sm); }
code, pre {
font-family: var(--font-mono);
font-size: var(--text-sm);
}
When to Use This Tool
Create consistent design tokens and CSS variables for component libraries and UI frameworks.
Recommended: Component Libraries
Generate base CSS with reset styles and design tokens to quickly start new web projects.
Recommended: New Projects
Convert brand colors and typography guidelines into reusable CSS custom properties.
Recommended: Branding
Define breakpoints and spacing scales for consistent responsive layouts across your site.
Recommended: Mobile-First
Use CSS variables for light/dark themes and dynamic color schemes that can be swapped at runtime.
Recommended: Dark Mode
Centralize design decisions in CSS custom properties for easier updates and consistency.
Recommended: Large Projects
How It Works
Choose a preset (Modern Minimal, Bold & Vibrant, Tailwind-inspired, or Bootstrap-inspired)
Configure colors - each color auto-generates 9 shades (50-900) for your palette
Set typography with font families, type scale, weights, and line heights
Define spacing system with base unit and scale multipliers
Configure responsive breakpoints for your design
Toggle CSS reset and minification options
Preview file size and copy or download your stylesheet
Use CSS variables in your HTML/CSS (var(--primary-500), var(--text-lg), etc.)
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Pure JavaScript for optimal performance on modern browsers.
Secure
No data collection, no tracking, no sign-up required.
Frequently Asked Questions
What are CSS custom properties and why use them?
CSS custom properties (CSS variables) let you store values like colors and sizes in :root and reuse them throughout your stylesheet with var(--property-name). They enable runtime theme switching, reduce code duplication, and make design updates easier by changing values in one place.
How do the color shades work?
Each color you input generates 9 shades (50-900): lighter shades (50-400) mix your color with white, 500 is your base color, and darker shades (600-900) mix with black. This creates a consistent color palette similar to Tailwind CSS, giving you --primary-50 through --primary-900 variables.
Should I include the CSS reset?
Yes, for most projects. The CSS reset normalizes browser default styles, sets box-sizing to border-box, and removes default margins/padding. This creates a consistent baseline across all browsers. Disable it only if you're using another reset library or framework.
What's the difference between minified and formatted CSS?
Formatted CSS has indentation, line breaks, and comments for readability during development. Minified CSS removes whitespace and comments, reducing file size for production. Use formatted for development, minified for production deployment.
How do I use the generated CSS variables?
In your CSS, reference variables with var(): color: var(--primary-500); font-size: var(--text-lg); margin: var(--space-4). You can also use them in inline styles: style="color: var(--accent-600)". All modern browsers support CSS custom properties.
Can I modify the spacing scale?
Yes! The base unit controls the multiplier (default 4px). The scale array defines multipliers: 1 = 1x base unit, 2 = 2x, etc. With 4px base and scale [0, 1, 2, 4], you get --space-0 (0px), --space-1 (4px), --space-2 (8px), --space-4 (16px).
How do breakpoints work?
Breakpoints define viewport widths for responsive design. Use them in media queries: @media (min-width: var(--breakpoint-md)) { ... }. Note: CSS variables in media queries require preprocessing or fallback values. Consider using the pixel values directly in media queries.
Can I add more colors or fonts?
The tool provides 4 core colors (primary, secondary, accent, neutral) which is sufficient for most design systems. For additional colors, you can manually add CSS variables to the :root block, or run the generator multiple times with different color inputs and combine the outputs.