See here: http://en.support.wordpress.com/code/posting-source-code/
Wrap your code in these tags: [sourcecode language='css'] .. [/sourcecode]
(or shorter [code lang='css'] .. [/code] )
Note that Visual Editor doesn't interpret the tags, you need to click Preview to see how it works.
Available language codes:
- actionscript3
- bash
- clojure
- coldfusion
- cpp
- csharp
- css
- delphi
- erlang
- fsharp
- diff
- groovy
- html
- javascript
- java
- javafx
- matlab (keywords only)
- objc
- perl
- php
- text
- powershell
- python
- r
- ruby
- scala
- sql
- vb
- xml
Hope that helps.
