CSS Properties, CSS Elements, CSS Functions and Tables MCQ question and answer with solution | CSS MCQs

Author: The author specifies style sheets for a source document according to the conventions of the document language. For instance, in HTML, style sheets may be included in the document or linked externally.
User: The user may be able to specify style information for a particular document. For example, the user may specify a file that contains a style sheet or the user agent may provide an interface that generates a user style sheet (or behaves as if it did).
User agent: Conforming user agents must apply a default style sheet. A user agent’s default style sheet should present the elements of the document language in ways that satisfy general presentation expectations for the document language

transform-style is used to define how nested items are rendered in a 3-D space, the choice being either flattened or with their dimensions preserved. This property affects the children of the element and not the element itself. Also, the property does not cascade, so it is necessary to apply it at all levels.

The @import rule allows users to import style rules from other style sheets. If an @import rule refers to a valid stylesheet, user agents must treat the contents of the stylesheet as if they were written in place of the @import rule.