put https://service.pcibooking.net/api/resources/stylesheet/
This method allows you to create a new CSS record or update an existing one(by overriding the current content).
Same method is used for creating a new CSS resource and updating an existing CSS resource
Please be aware that the same method is used for both creating a new CSS and updating an existing one.
If you update an existing CSS, the content of it will be replaced with the uploaded content and this action cannot be undone.