About this guide
Throughout this guide we include detailed information about the level of support for the different parts of the CSS technology. Some CSS tests we created ourselves, but we are also extremely indebted for tests created and made available by
- World Wide Web Consortium (all respect to Eric Meyer for his comprehensive, easy to understand CSS1 test suite)
- Ian Hickson's import tests
- David Baron's css tests
- RichinStyle's CSS2 test suite
Specifically, the browsers we tested on were:
- Version 4.0 Windows
- Version 5.0 Windows
- Version 5.5 Windows
- Version 6.0 (Public Beta) Windows
- Version 4.0 Macintosh
- Version 5.0 Macintosh
The Windows and Macintosh versions of Internet Explorer up until now have not shared the same code base. One of the results of this is that Version 6.0 Windows still does not have the level of style sheets support of the much older Version 5.0 Macintosh.
- Version 4.x Windows
- Version 4.x Macintosh
These were found to be so similar that we have combined the information into one entry in our reports. For the one or two occasions where there were differences we have specifically mentioned this in the details section of the table.
- Version 6.0 Macintosh
- Version 7.0 Macintosh
The Windows and Macintosh versions of these latest versions of Netscape Navigator share the same code base, so their support for CSS is assumed to be identical.
- Opera 3.61 (Beta) Windows
- Opera 5.0 (Technology Preview 2.278) Macintosh
- Opera 7.0 Windows
The Windows and Macintosh versions of Opera share the same code base, so their support for CSS is assumed to be identical.
The selector or property, with all its possible values is completely supported by the browser as we tested it.
The selector or property is largely supported. Often this means that certain types of value for a property, or implementations of a selector are not supported. Nothing fatal happens in the browser if you use this selector or property with this type of value, it will just do nothing. Complete details are available in the full version of our CSS Guide.
Proceed with caution: this is the danger sign of our tables. While some implemtations of a selector or property may work, many will cause serious problems in this browser, for example very strange re-drawing resulting in illegibility. Complete details are available in the full version of our CSS Guide.
This simply means that a selector or property is not supported at all by this browser. If you use it, nothing will happen.