HTML is a subset of

How many main content models are there in HTML5?

What HTML tags are generally preferred for sectioning a webpage?

which of the following tag is used to mark a beginning of paragraph ?

Which prefix are used for CSS properties to work on older Mozilla Firefox browsers?

Which of the following is true about the list-style-image property?

Indent the text by 50px.

<p id="indent">This is a line of <strong>code</strong></p>

The background-attachment CSS property sets whether a background image's position is fixed within the viewport, or scrolls with its containing block.

"Content is not clipped and may be rendered outside the padding box's top and bottom edges". The following statement is true for which of the following overflow-y values?

The scroll-padding-right property defines offsets for the right of the optimal viewing region of the scrollport: the region used as the target region for placing things in view of the user.