Typechart lets you flip through, preview and compare web typography while retrieving the CSS.

Browse typographic styles. (See “anatomy of a style” below)
Download CSS. { 1 }
Compare Windows (ClearType) rendering { 3 } with Apple font rendering { 2 }
Each style corresponds with a “style ID” { 4 }, which allows you to [...]

Markercss is a complete CSS framework for creating website layouts quickly.
It comes with a set of stylesheets: layout, borders, backgrounds, links, forms, text, colors & tables which makes it possible to use only what is needed.

The framework has a combination of references like adding a w10 class (10-1000 is defined) will make an element 10px [...]

CSS grid system is one tool that facilitates the work of web designers and web developers to develop a website. Advantage of using CSS grid system is you can reduce development time. Grids also provide uniformity and consistency in the placement of HTML elements.
Grid System Generator
This tool generates grid systems in valid css / xhtml [...]

Cascading Style Sheets (CSS) is a good way to specify the styles of fonts and other page elements on your sites. It makes it easier for you to update styles too, because when done right, you only need to make a single change to update the styles on multiple pages and elements.
Another bonus is that [...]

PrimerCSS is a very simple & free web application that enables anyone to paste HTML and get a starter stylesheet automatically.
It analyzes the code you pasted, pulls out all the ids/classes used and places them into the stylesheet.
The application is specially handy for web designers who write the most part of the HTML structure at [...]

Why a 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. But, most frameworks are [...]