Agreed. The others here saying FAQs are useful should try gov.uk and understood why they shouldn't be needed. Using gov.uk you really get an idea a lot of research and testing has gone into the text phrasing and structure and the overall look and feel of the site. It's really excellent. I've since seen other countries' government websites copy many of its design aspects - the highest form of flattery. It's all organised by Government Digital Service, who produce "government as a platform" tools [1]. Once you realise that this group have managed to get various IT departments spread across the whole UK government to stick to a common set of tools and design rules, it's clearly an even greater achievement (see their "design system" [2]). All the more so given how large government IT projects normally turn out.
One more for good measure: the "design principles" page: [3].
One more for good measure: the "design principles" page: [3].
[1] https://gds.blog.gov.uk/category/government-as-a-platform/
[2] https://design-system.service.gov.uk/
[3] https://www.gov.uk/guidance/government-design-principles