I want to have a specific CSS file at the onepage checkout and I was simply wondering if there is a layout handle for that (so I don't have to make one).
Probably answered my own question, but I found this in my search: http://itpscan.info/blog/magento/layout_handles.php
Might come in handy for other people searching for default XML handles
Best Answer
Here is the one page check out index handler
<checkout_onepage_index>
By default you this is the handler you can find this handler in layout folders
checkout.xml
fileI think you know the xml code for adding the css if you not then tell me I will update the code