• attribute- A value associated with an element, consisting of a name, and an associated (textual) value.
• Style sheet- A set of statements that specify presentation of a document. The interaction of these sources is described in the section on cascading and inheritance.
• Universal selector- The universal selector (*) may be used to select all the elements in a particular range. Be aware that the universal selector is the most performance taxing selector, and should be used in restricted manner. Example-
*{
Background-color: blue;
}