I'm working for a client that requires me to create website style guides from detailed photoshop mockups of the already designed website. These style guides are then passed on to the actual developers so that they can code and create the CSS based on the provided style guides.
Previously I've done all of this myself, so I never really bothered creating style guides. I was wondering if anyone has a software of preference that they use when creating style guides. I currently have been using Photoshop and just overlaying lines on top of the website layout to detail dimensions and so forth. Really I wanted to know if there's an 'industry standard' for how these should be created.