I list below all topic groups, which I have done according to subjects, which they handle. You can return to this topic group by using this menu and the link Table of topic groups on the top of the each page.
In order to construct CSS-files it is necessary to understand, in which order browsers should read CSS-properties.
In principle there are three types of style sheets:
:hover. Saved definitions creates a certain kind of UA style sheet. Mozilla Gecko browsers use actual UA CSS, because they define default HTML-setting by CSS in /res/html.css and /res/html.css (also Opera use UA CSS in non-HTML implementations; I handle UA CSS related properties in an extra page). Own default settings of browsers are used, if any CSS-properties are not especially defined.