Animate.css is a library of ready-to-use, cross-browser animations for use in your web projects.
Frameworks
Bootstap - Powerful, extensible, and feature-packed frontend toolkit.
BULMA - Bulma is a free, open source framework that provides ready-to-use frontend components that you can easily combine to build responsive web interfaces.
Material Web is Google’s component library for building applications that work in any web framework.
Material Design Lite lets you add a Material Design look and feel to your websites.
Materialize - A modern responsive front-end framework based on Material Design
MUI is a lightweight CSS framework that follows Google's Material Design guidelines.