NegativeGrid is a lightweight, fluid CSS grid. I originally made it for myself but it turned out to be so good that I’m publishing it here, for everybody to download. It is very compact and due to only three classes that you have to remember it is super-easy to learn. You can use it with media queries and is perfect for mobile-first approach.

BluCSS is a CSS framework designed with ease of use and simplicity in mind. It is specifically made so that when you're working on your next project, you don't have to worry about the essentials. With BluCSS, you can be up and running in less than a minute.

Ideal Forms is a small framework to build powerful and beautiful online forms.

This morning I awakened with a question in my twitter stream from @deebeefunky. He was frustrated by the fact that when he sets a blur on box-shadow, it shows on two sides of the box. He wants it to show on only one side. Of course, that got me thinking. I did come up with one solution—it won’t work in every situation—but it may work in yours.

With CSS animation now supported in both Firefox and Webkit browsers, there is no better time to give it a try. Regardless of its technical form, whether traditional, computer-generated 3-D, Flash or CSS, animation always follows the same basic principles. In this article, we will take our first steps with CSS animation and consider the main guidelines for creating animation with CSS. We’ll be working through an example, building up the animation using the principles of traditional animation. Finally, we’ll see some real-world usages.

Typography is everyone’s favorite toy in web design. The CSS3 text-shadow property is commonly used to recreate Photoshop’s Drop Shadow type shading to add subtle shadows which help add depth, dimension and to lift an element from the page. But this isn’t all the text-shadow property is capable of. With a little ingenuity and creativity text-shadow can create some remarkable effects.

This is a simple trick to overlay a grid or a mock-up over a page you're styling. It will also allow you to edit content directly in the browser to see how your layout behaves depending on various lines of text.

Another new property introduced by the CSS3 Backgrounds and Borders module is background-size. The property adds new functionality to CSS allowing designers to specify the size of background images using either lengths, percentages, or by using one of two keywords; contain or cover.

If you’ve seen the code for CSS3 border images then you’re probably familiar with the space and round values for the border-image-repeat property.

Front-end developer Stephanie (Sullivan) Rewis, owner of W3Conversions, takes you through a variety of innovative uses for the new CSS3 background-size property. More control than you've ever had before!

Rounded corners are now trivially easy to achieve via border-radius. But that only allows us to cut into the shape. What if we want to connect a shape to another with a rounded outward corner. Much easier to explain with a graphic:

Just for kicks I wanted to see if I could make a row of images animate across a page and repeat indefinitely. Turns out it's really not that hard. The way I did it was to make one big long graphic where the first part and the last part are visually identical.

Primary is a simple CSS Framework, designed for Developers and Designers in order to make using CSS as easy as possible.

The idea of "CSS Tabs" has been around for a long time. If you Google it, a lot of what you get is styled CSS tabs, but less stuff on the building of an actually functional tabbed area. At least, functional in the sense as we think of tabbed areas today: click a tab, see a new content area with no page refresh.

LESS extends CSS with dynamic behavior such as variables, mixins, operations and functions. LESS runs on both the client-side (IE 6+, Webkit, Firefox) and server-side, with Node.js.

CSS3 media queries are very handy to target various devices with various monitor (screen) size. With the help of the CSS3 media queries we can have site optimized for iPhone and other mobile devices, with the same solution we can have site optimized for iPad and all other tablets . This CSS solution will be much more cheaper than building new mobile web site something like http://m.somewebsite.com or http://ipad.somewebsite.com .

Bootstrap is a toolkit from Twitter designed to kickstart development of webapps and sites. It includes base CSS and HTML for typography, forms, buttons, tables, grids, navigation, and more.