CSS

Table of contents

  1. 1. Documentation about CSS
  2. 2. Getting help from the community
  3. 3. Tools easing CSS development
  4. 4. Related Topics
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Cascading Style Sheets (CSS) is a stylesheet language used to describe the presentation of a document written in HTML or XML (including various XML languages like SVG or XHTML).

CSS is one of the core languages of the open web and has a standardized W3C specification.

CSS Reference

A complete reference describing every properties and concepts of CSS.

CSS Tutorial

A step-by-step introduction to help complete beginners get started.

CSS3 Demos

A collection of demos showing the latest CSS technologies in action.

Documentation about CSS

CSS Key Concepts
Introduces fundamentals like specificity and inheritance, the box model and margin collapsing, stacking and block-formatting contexts, or the initial, computed, used and actual values.
Using CSS transforms
Presents the 2D operations that can be applied to each element in order to rotate, skew, translate it.
Using CSS transitions
Explains how to change the aspect of an element using a smooth animation between the initial and final state.
Using CSS animations
Describes how to define animations of an element but also how to detect in Javascript if the browser supports it.
Using CSS gradients
Explains how to define gradients, images composed of smooth variations of colors.
Using CSS multi-column layouts
Presents how to make multi-column page settings using the CSS Level 3 multi-column layout.
Using CSS multiple backgrounds
Describes how to define several backgrounds on the same element.
Using CSS media queries
Presents how to select style sheets based on details of the rendering device, like its viewport size, its resolution or if it has a touchscreen.
Using CSS counters
Explains how to use automatic counters and numbering, essentially used as list counters.
Fonts and Typography
Informs about managing your fonts using @font-face and the WOFF font format.
Consistent List Indentation
Trying to change the indentation of lists with CSS is trickier than it looks, but only because CSS-conformant browsers took different paths to default indentation. Find out how to get them all in line.
Using dynamic styling information
How to obtain information on and manipulate styling via the DOM

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Getting help from the community

You need help on a CSS-related problem and can't find the solution in the documentation?

Don't forget about the netiquette...

Tools easing CSS development

  • Firefox' Firebug extension, a popular extension of that navigator that allows to edit live CSS on watched sites. Very practical to test some changes, though this extension does much more.
  • Firefox' Web Developer extension also allows to watch and edit live CSS on watched sites. Simpler than Firebug, though less powerful.
  • Firefox' EditCSS extension allows editing CSS in the sidebar.

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Related Topics

  • Open Web languages on which CSS is often applied: HTML, SVG, XHTML, XML.
  • Mozilla technologies which make extensive use of CSS: XUL, Firefox and Thunderbird extensions and themes.

 

 

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