You never have to write CSS for a Pagedraw generated component. If you must use custom css, you can mark a block in Pagedraw as a handwritten component coming from a designated file. In that component (done entirely by hand, outside Pagedraw), you can of course use whatever CSS you want. Pagedrawn components and handwritten components play nicely together; the CSS we generate shouldn't interfere at all with the CSS you write by hand for non-Pagedraw components.