A CSS Library is a pre-prepared library that contains a set of CSS styles which can be used in a web project. They can include pre-designed classes for things like grids, animations, buttons, typography, and other UI components.

On the other hand, a CSS Framework is a pre-prepared kit that's designed to allow for easier, more standards-compliant web design using the Cascading Style Sheets language. It's more comprehensive than a CSS library.

1. Animate.css

   • A CSS library offering ready-to-use, cross-browser animations for web projects.
   • Wide variety of animations to choose from.
   • Easy to use and customize for any web project.

   Animate.css | A cross-browser library of CSS animations.

2. Picnic.css

   • A minimalistic, lightweight, and beautiful CSS library.
   • Provides a consistent, global default styling for HTML elements.
   • Includes a modular and responsive grid system.

   Picnic CSS

3. Magic Animation

   • A CSS animation library with a variety of unique, eye-catching animations.
   • Includes animations like 'puff in', 'hole', 'foolish', and more.
   • Easy to integrate with any web project to enhance the visual experience.

   Magic CSS animations

4. Cirrus.css

   • A responsive and comprehensive CSS framework for modern web design.
   • Offers a collection of customizable classes for layout, typography, buttons, forms, and more.
   • Designed for usability and speed, ensuring optimal performance.

   Cirrus CSS

5. Halfmoon.css

   • A front-end CSS library geared towards quickly building responsive, modern websites.
   • Includes a dark mode toggle built-in.
   • Provides flexible components and utilities, and support for JavaScript plugins.

   Front-end framework with a built-in dark mode and full customizability using CSS variables; great for building dashboards and tools