Fluid CSS Framework

Unleash Your Design Potential with Fluid CSS

Discover Fluid CSS: The lightweight, atomic framework meticulously crafted for rapid prototyping, responsive design, and inherently accessible interfaces. Simplify your workflow and build stunning UIs with unparalleled flexibility.

Explore Core Features

Why Fluid CSS Stands Apart

Fluid CSS is engineered to empower developers and designers, offering a streamlined approach to modern web development. Experience intuitive utilities, vibrant semantic color tokens, and robust responsive design tools that adapt seamlessly to any device.

Atomic & Expressive Styling

Craft stunning, pixel-perfect UIs with a vast array of atomic utility classes. Every design decision is granularly controlled, allowing for unparalleled customization without bloat.

Intuitive Forms & Interaction

Build accessible, user-friendly forms with responsive inputs, clear labels, and subtle visual feedback. Each element is designed for optimal interaction and polish.

Bearded man speaking into a microphone.

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Vibrant Semantic Colors

Leverage a powerful semantic color system for consistent theming across light and dark modes. Easily define UI roles and ensure visual harmony throughout your application.

Primary Brand
Primary Brand Dark
Primary Brand Light
Secondary Accent
Tertiary Highlight
Success State
Warning Alert
Error Message
Info Callout
Muted Element
Surface Element
Page Background
Border Line

Uncompromising Accessibility

Fluid CSS is built with accessibility at its core. Features like robust focus rings, screen-reader-only text, and non-selectable elements ensure your interfaces are inclusive and usable for everyone.

Dynamic Animations & Transitions

Bring your interfaces to life with smooth, performant animations and controlled transitions. Enhance user experience with subtle visual cues and dynamic content flows.

This box fades in and has a delayed transition on hover.

Flexible & Responsive Layouts

Effortlessly craft sophisticated, responsive layouts with comprehensive flexbox and grid utilities. Control element ordering, alignment, and distribution across all screen sizes.

Flex Item 1 (Reordered)
Flex Item 2 (Reordered)
Grid Item 1
Grid Item 2
Grid Item 3

Refined Typography & Spacing

Achieve perfect typographic harmony with a fluid scaling system and precise spacing controls. Ensure readability and visual appeal for all text content.

This long paragraph demonstrates text truncation with an ellipsis, maintaining clean overflow handling for constrained content areas.

This text forces content onto a single line, ideal for headings or labels, with horizontal scrolling if it overflows its container.

This text preserves all whitespace, including multiple spaces and line breaks, useful for preformatted content.

Seamless Responsive Design

Build interfaces that look and perform flawlessly on any device. Fluid CSS's responsive utilities and design tokens ensure a consistent, adaptive user experience across all screen sizes.

No Border Radius
Small Radius
Medium Radius
Large Radius
Full Radius

Utility Classes

Fluid CSS provides atomic utility classes for display, alignment, spacing, and visibility. These classes let you quickly control layout and presentation for any element, on any screen size. For breakpoint-based responsiveness, use custom media queries or extend the framework as needed.

Layout Example
Visible on all screen sizes
Flex on all screens
Centered text on all screens

Accessibility Utilities

Ensure your designs are accessible to all users with utilities that enhance keyboard navigation and screen reader support.

Fluid CSS Features

Design Tokens

Centralized custom properties for color, spacing, typography, and breakpoints

Atomic Utilities

Utility-first classes for rapid prototyping and consistent design

Accessibility

Built-in a11y helpers, focus rings, and reduced motion support

Responsive Layouts

Grid, flexbox, and container utilities for adaptive interfaces

Explore Full Documentation

Comprehensive Documentation

Dive deep into the Fluid CSS framework with our extensive and easy-to-understand documentation. From getting started guides to advanced customization, we've got you covered.

  • Installation Guides: Quick start with npm, CDN, or local setup.
  • Utility Reference: A complete list of all atomic utility classes with examples.
  • Design Tokens API: Understand and customize every variable for unique branding.
  • Accessibility Best Practices: Learn how to build inclusive interfaces with Fluid CSS.
  • Theming & Dark Mode: Instructions for effortless theming and dark mode implementation.
View Documentation

Portfolio

Project One

Modern landing page for a SaaS startup, featuring responsive grid and atomic utilities.

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Project Two

E-commerce product grid using Fluid CSS grid, spacing, and color tokens for a clean UI.

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Project Three

Accessible blog template with semantic color system, typography, and a11y helpers.

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Join Our Growing Community

Connect with other Fluid CSS users, contribute to the project, and get support. Our community is a vibrant hub for sharing knowledge and improving the framework together.

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