I think RichFaces only load files required on each page. Meaning that if you don't use a comboBox component, the comboBox CSS file will not be loaded. Try to add a comboBox, just for test, and see if it add the CSS file. At least, it's the case in last version of RichFaces, not sure about 3.3.1
Many thanks for your response.
I tried adding a dummy combo box and voilà !!!
The styles were being applied.
I really do not need that component, but looks like I need that hack for the page to work unless there are any other suggestions.
You can load the CSS file on a template if you need the CSS class a lot or only on this particular page.
Will probably go with adding the styles manually.
Appreciate your taking the time.