Modern Versatile CSS3 Framework – teutonic.css
teutonic.css is a versatile, pure CSS/CSS3 Framework to help web developers to build responsive, accessible, modern webpage/webapp.
Frameworks
Small Responsive CSS Framework – strawberry.css
Yet another small CSS framework that helps developers and beginners to quickly create fully responsive, nested grid layouts using CSS flexbox model.
Minimal Sweet CSS Framework – lemon
lemon is a simple, lightweight, pure CSS front-end framework that helps you create responsive, clean websites and web applications.
Modern CSS Framework For Documentation Pages – Whiteprint.css
Whiteprint is a responsive, flexible, modern, clean CSS/SCSS framework for documentation web pages.
Modern Responsive CSS Framework – Biomatic UI
Biomatic UI is a modern, responsive CSS framework for modern web and mobile design.
Minimalist 12-Column Responsive Grid System with Pure CSS – Republic
Republic is a super tiny, cross-browser CSS framework which helps you create fully responsive 12-column based grid layout in a minute.
A Minimalist CSS Framework – Bijou
Bijou is a lightweight and easy CSS framework for quickly and easily creating your own styles of grid layout, typography, tables, buttons and more.
Simple and Lightweight Responsive Grid System – IceCream
IceCream is a dead simple and lightweight CSS/LESS framework for creating a responsive grid layout with ease.