With HTML5 support coming so fast, with the tiniest of hacks we are able to use it today in virtually all browsers. Using HTML5 makes for much cleaner mark up. This framework fully uses all the great advantages of HTML5.
The 960 Grid System is an effort to streamline web development workflow by providing commonly used dimensions, based on a width of 960 pixels. There are two variants: 12 and 16 columns, which can be used separately or in tandem.
HTML KickStart is an ultra–lean set of HTML5, CSS, and jQuery (javascript) files, layouts, and elements designed to give you a headstart and save you 10's of hours on your next web project.
Built with typographic standards in mind, Baseline makes it easy to develop a website with a pleasing grid and good typography. Baseline starts with several files to reset the browser’s default behavior, build a basic typographic layout — including style for HTML forms and new HTML 5 elements — and build a simple grid system.
Blueprint is a CSS framework, which aims to cut down on your development time. It gives you a solid foundation to build your project on top of, with an easy-to-use grid, sensible typography, useful plugins, and even a stylesheet for printing.
A full featured and beautiful CSS framework which originally combined the best of Blueprint, Tripoli (hence the name), Hartija, 960.gs, and Elements, but has now found a life of its own.
As one of the original authors of Blueprint CSS I’ve decided to re-factor my ideas into a stripped down framework which provides the bare essentials to begin any project. This framework will be lite and strive not to suggest un-semantic naming conventions. You’re the designer and your craft is important.
> Lightweight, highly customizable, scalable, Sass-based, OOCSS framework. LESS and Stylus ports also available.
**Responsive:** Yes
**Website:** http://concisecss.com/
## Crumpet
> A Deliciously Simple SASS/SCSS Responsive Framework
Everything is straight forward, all of the code is commented and gives you instructions on how to use Crumpet, so you can spend all your time in the code editor.
Easy is a CSS/HTML/JavaScript framework started as a personal project and then grew into something more. The idea behind it is to reduce the amount of time spent on setting up the basic master HTML template by reusing the same coding techniques.
Emastic is a CSS Framework, it’s continuing mission: to explore a strange new world, to seek out new life and new web spaces, to boldly go where no CSS Framework has gone before.
FEM CSS Framework is a 960px width + 12 column grid system + CSS common styles, to easy and fast develop web layouts. It is based in the 960 Grid System, but with a twist in the philosophy to make it more flexible and faster to play with boxes.
Flat UI Free is made on the basis of Twitter Bootstrap in a stunning flat-style, and the kit also includes a PSD version for designers.Flat UI Free contains many basic and complex components which are great for designers to have at hand: buttons, inputs, button groups, selects, checkboxes and radio-buttons, tags, menus, progress bars and sliders, navigation elements and more.
The Fluid 960 Grid System templates have been built upon the work of Nathan Smith and his 960 Grid System using effects from the MooTools and jQuery JavaScript libraries.
Foundation is built with Sass, a powerful CSS preprocessor, which allows us to much more quickly develop Foundation itself and gives you new tools to quickly customize and build on top of Foundation.
G5 Framework started as a personal project. In an attempt to speed up workflow, reuse the best coding practices & similar coding techniques, the framework serves as a starter file for new websites.
Gumby is a responsive 960 grid CSS framework. The grid lets you lay out pages quickly and easily in a natural, logical way. The framework is packaged with tons of styles and common interface elements to help you quickly put together functional prototypes.
Helium is a framework for rapid prototyping and production-ready development. In many ways it's similar to both Twitter Bootstrap and ZURB Foundation - in fact, it uses bits of their code. Unlike either of these two frameworks, however, Helium is designed to be much more lightweight and easier to tinker with.
Ingrid is a lightweight and fluid CSS layout system, whose main goal is to reduce the use of classes on individual units. In general, it is fluid, lightweight and extendable.
It offers a fluid and responsive grid, common interface elements, interactive components, a design-first approach with ease of use and simplicity at its core. Start integrating Ink in your projects and remove the hassle of building the basics, staying free to focus on what's important.
> A powerful, scalable, Sass-based, [BEM](http://bem.info/), OOCSS framework.
inuit.css is a Sass based, Object Oriented framework that is full of objects and abstractions. inuit.css provides little-to-no design which means no undoing things, no deleting CSS and no adhering to other peoples’ design decisions.
Jeet allows you to express your page grid the same way a human would describe it. No more needlessly nesting elements. No more rigid twelve column rules. Enjoy building faster with less code, and more flexibility with Jeet.
The framework is not meant to be too prescriptive - we don't want to force developers into a certain coding style - and so can be used as a starting point for any type of project.
Malo is ultra small css library for building web sites. It is meant to be structural base for small or medium web sites. Malo derives from it’s bigger brother Emastic CSS Framework.
> An implementation of Material Design components in vanilla CSS, JS, and HTML
Material Design Lite (MDL) lets you add a Material Design look and feel to your static content websites. It doesn't rely on any JavaScript frameworks or libraries. Optimized for cross-device use, gracefully degrades in older browsers, and offers an experience that is accessible from the get-go.
> Created and designed by Google, Material Design is a design language that combines the classic principles of successful design along with innovation and technology.
> Milligram provides a minimal setup of styles for a fast and clean starting point. Just it! Only 2kb gzipped! It's not about a UI framework. Specially designed for better performance and higher productivity with fewer properties to reset resulting in cleaner code.
mini.css tries to provide as much functionality as possible in under 7KB gzipped, while mainting a mobile-friendly approach and allowing you to customize it any way you want.
> A library for creating Web Components based on Material Design
Polymer is a library for creating Web Components, which are a set of W3C standards and upcoming browser APIs for defining your own custom HTML elements. With the help of polyfills and sugar, it can create these custom elements and bring Web Component support to browsers that don’t play nice with the standard just yet.
PureCSS is a collection of responsive 'drop-ins' built with - you guessed it! - pure CSS! The PureCSS website also has a skin builder on their website, so you're restricted by default colors no more.
Built using the 'Mobile First' approach, 'clearfix' for clearing floats, box-sizing: border-box for adding additional padding to elements, and weighs less then 1kb compressed.
RÖCSSTI is a CSS micro-framework which includes accessibility notions, typo settings, IE fixes, reusable classes, ect. It is the little brother of [KNACSS](http://www.knacss.com/). It also has LESS and Sass versions.
Semantic allows developers to build beautiful websites fast, with concise HTML, intuitive javascript, and simplified debugging, helping make front-end development a delightful experience. Semantic is responsively designed allowing your website to scale on multiple devices. Semantic is production ready and partnered with frameworks such as React, Angular, Meteor, and Ember, which means you can integrate it with any of these frameworks to organize your UI layer alongside your application logic.
> A Beautiful Boilerplate for Responsive, Mobile-Friendly Development.
Skeleton is a small collection of CSS files that can help you rapidly develop sites that look beautiful at any size, be it a 17" laptop screen or an iPhone.
> A flexible width, component based CSS layout system
StackLayout makes it incredibly easy to use semantic class names for particular areas of your site, such as the main navigation or a thumbnail gallery, or for the entire site as part of your deployment process.
The web is a responsive place, from your lithe & lively development process to your end-user's super-tablet-multi-magic-lap-phone. You need grids that are powerful yet custom, reliable yet responsive.
Taiga Boilerplate is a small HTML/SASS framework for starting a new web project. It is mobile-first with a semantic SASS grid and based on the principles of SMACSS and BEM.
The Golden Grid is a web grid system. It 's a product of the search for the perfect modern grid system. It 's meant to be a CSS tool for grid based web sites.
Unsemantic is a fluid grid system that is the successor to the [960 Grid System](http://960.gs/). It works in a similar way, but instead of being a set number of columns, it's entirely based on percentages.
Standardizes CSS, improves usability and interaction, sets base typography to help vertical rhythm and readability and adds helper classes to style elements easily.
**Responsive:** Yes
**Website:** http://workless.ikreativ.com/
## xCSS
> Object-Oriented CSS Framework
xCSS bases on CSS and empowers a straightforward and object-oriented workflow when developing complex style cascades. Using xCSS means a dramatic cut down to your development time by: having a intuitive overview of the overall CSS structure, using variables, re-using existing style cascades and many other handy features.
YAML is an (X)HTML/CSS framework for creating modern and flexible floated layouts. The structure is extremely versatile in its programming and absolutely accessible for end users.
The foundational YUI CSS is an extremely lightweight layer of responsive CSS for your projects. It offers a customizable responsive grid , along with styling for forms, tables, menus, popovers, notifications, images and more. Plays nice with YUI's JavaScript Framework.