______ is not associated with web socket communication

Which is not a valid value for the rules attribute in HTML tables?

Which is not the value for CSS transition?

To represent a Non- English character in HTML which of the following tag is used.

The_______ selector selects all elements that are the adjacent siblings of a specified element.

The :left CSS pseudo-class, used with the @page at-rule, represents all left-hand pages of a printed document.

The ________ property defines the text selection policy for various portions of a document.

The :optional CSS pseudo-class represents any <input>, <select>, or <textarea> element that does not have the required attribute set on it.

For the following table, separate the border and hide the empty cells.