Hi Kate,
Oxygen does not influence the web browser and the way it represents the XML file when the file is opened for preview. Both Oxygen and the web browser apply the CSS instruction
xml-stylesheet which provides the path of the CSS file. If it is the same version of the CSS stylesheet when you view the XML document both in Oxygen Author and in the web browser (that is, the CSS file was not modified or overwritten by other application between opening the XML file in Oxygen and in the web browser) but the browser view is still different please check that the CSS stylesheet does not contain an
Oxygen extension function. The web browser will stumble on the Oxygen extension from the CSS and probably stop rendering the XML document.
Can you post here two small sample files (XML + CSS) or send the files using the
problem report page so that we can reproduce the problem?
Thank you,
Sorin