# amfe/lib-flexible

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12,519 stars · 3,414 forks · JavaScript

## Links

- GitHub: https://github.com/amfe/lib-flexible
- awesome-repositories: https://awesome-repositories.com/repository/amfe-lib-flexible.md

## Description

lib-flexible is a responsive CSS layout library designed to create flexible web interfaces that scale proportionally across different screen sizes and device resolutions. It functions as a viewport scaling tool that manages device pixel ratios and screen widths to ensure layouts adapt to various mobile and desktop displays.

The library implements a scaling framework that calculates a dynamic root font size, enabling the consistent scaling of elements through relative rem units. It includes a CSS grid generator for producing grid styles based on design specifications, including column counts, gutters, and page margins.

The project provides broader capabilities for adaptive unit conversion, translating absolute pixel dimensions into relative units. It also handles device pixel ratio configuration via meta tags to maintain visual consistency across different screen densities.

## Tags

### User Interface & Experience

- [Design-Ratio Based Scaling](https://awesome-repositories.com/f/user-interface-experience/design-ratio-based-scaling.md) — Implements scaling logic that maps design dimensions to actual screen sizes using a predefined reference width.
- [Viewport Scaling Tools](https://awesome-repositories.com/f/user-interface-experience/full-screen-viewport-layouts/responsive-layout-switches/viewport-adaptation-logic/viewport-scaling-tools.md) — Provides a tool for managing device pixel ratios and screen widths to ensure layout adaptation.
- [Root Font Scaling](https://awesome-repositories.com/f/user-interface-experience/measurement-tools/dynamic-size-calculators/root-font-scaling.md) — Implements a mechanism for calculating a dynamic root font size based on pixel ratio and design widths. ([source](https://github.com/amfe/lib-flexible/tree/master))
- [Responsive Layout Scaling](https://awesome-repositories.com/f/user-interface-experience/responsive-layout-scaling.md) — Provides mechanisms to dynamically adjust content size and positioning for visual consistency across resolutions.
- [Rem Adaptation Utilities](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/content-styling/css-utility-libraries/css-utilities/rem-adaptation-utilities.md) — Translates fixed pixel dimensions into relative rem units that adapt to the root font size.
- [REM Scaling Frameworks](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/content-styling/css-utility-libraries/css-utilities/rem-scaling-frameworks.md) — Implements a scaling framework that calculates a dynamic root font size to enable consistent element scaling via rem units.
- [Viewport Width Calculators](https://awesome-repositories.com/f/user-interface-experience/styling-theming-systems/css-layout-systems/constraint-based-layouts/viewport-width-calculators.md) — Computes the current window width to determine the scaling ratio between the device screen and design draft.
- [Grid Style Generators](https://awesome-repositories.com/f/user-interface-experience/full-screen-viewport-layouts/responsive-layout-switches/column-based-responsive-grids/grid-specifications/grid-style-generators.md) — Provides a generator to produce flexible CSS grid styles from design specifications including columns and gutters.
- [Viewport Meta Tags](https://awesome-repositories.com/f/user-interface-experience/meta-tag-managers/viewport-meta-tags.md) — Provides utilities to inject and manage viewport meta tags for consistent cross-device scaling.

### Web Development

- [Mobile Web Development](https://awesome-repositories.com/f/web-development/front-end-development/mobile-web-development.md) — Enables the construction of web interfaces that automatically adjust layout and sizing for mobile screen widths.

### Content Management & Publishing

- [Measurement Unit Conversion](https://awesome-repositories.com/f/content-management-publishing/measurement-unit-conversion.md) — Translates absolute pixel dimensions from design specifications into relative units for adaptive layouts.

### Development Tools & Productivity

- [Device Pixel Ratio Management](https://awesome-repositories.com/f/development-tools-productivity/unit-converters/pixel-to-relative/device-pixel-ratio-management.md) — Manages device pixel ratios and screen densities to ensure visual elements remain sharp across different hardware.