You should use Skeleton if you're embarking on a smaller project or just don't feel like you need all the utility of larger frameworks. Skeleton only styles a handful of standard HTML elements and includes a grid, but that's often more than enough to get started. In fact, this site is built on Skeleton and has ~200 lines of custom CSS (half of which is the docking navigation).

In CSS we already have the selector ::first-line to apply style on the first line of element. But there is no selector like ::nth-line(), ::nth-last-line() or even ::last-line. Then I read an article A Call for ::nth-everything from CSS tricks. ::nth-line() is actually really useful in some situation.

csstyle is a modern approach for crafting beautifully maintainable stylesheets. The csstyle method is implemented using a set of SASS mixins that make your CSS readable and semantic, generate your selectors for you, and automatically handle things like specificity and nesting.

Pleeease is the best toolchain for your CSS. Just write DRY, future-proof CSS and Pleeease does the job for you*.

CSS.coloratum is a nifty little tool that helps you:

Share colors with friends and colleagues (never have to go through describing a shade again, just give them the link!)
Check out what RGB & HSL values correspond to that color keyword you keep using
Covert HSL to RGB, because you're done with your prototype and now it has to work in IE8 too
...and much more!

This isYet another megamenu for Bootstrap 3 from Twitter. Lightweight and pure CSS megamenu that uses the standard navbar markup and the fluid grid system classes from Bootstrap 3. Work for fixed and responsive layout and has the facility to include (almost) any Bootstrap elements.

Build mobile apps with simple HTML‚ CSS‚ and JS components.

Normalize.css makes browsers render all elements more consistently and in line with modern standards. It precisely targets only the styles that need normalizing.

Apache Cordova is a platform
for building native mobile
applications using HTML, CSS
and JavaScript

Unpack your css files to make them more readable.

Pushy is a responsive off-canvas navigation menu using CSS transforms & transitions.

The simple jQuery Plugin for customizable overlay which covers a page, elements or iframe-windows that is specified.

Just a simply easy way to label each element you want!

mqGenie adjusts CSS media queries in browsers that include the scrollbar's width in the viewport width so they fire at the intended size

• mqGenie @ GitHub.

Break free from CSS vendor prefix hell!
-prefix-free lets you use only unprefixed CSS properties everywhere. It works behind the scenes, adding the current browser’s prefix to any CSS code, only when it’s needed.

Preprocessing just got easier with Prepros
Enjoy the dead simple design & development workflow

Ce site vise à vous apprendre les bases de CSS utilisées pour structurer n'importe quel site web.

Cross Browser CSS Checkbox Generator | Free Checkbox CSS

Pixate Engine for iOS:
A free dynamic user interface platform for mobile apps.

Smart, Lightweight and Portable IDE for faster and easier web development.