Initial value

The initial value of a CSS property is its default value, as listed in its definition table in the specification. The usage of the initial value depends on whether a property is inherited or not:

You can explicitly specify the initial value by using the initial keyword.

Note: The initial value should not be confused with the value specified by the browser's style sheet.

Specifications

Specification
Cascading Style Sheets Level 2 Revision 2 (CSS 2.2) Specification
# specified-value

See also