CSS:initial
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[edit] Summary
initial is a value that is allowed on every CSS property. It causes the element for which it is specified to use the initial value of the property.
[edit] For non-inherited properties
For non-inherited properties, this reinforces the default behavior, and is only needed to override another rule. For example:
/* give second-level headers a green border */
h2 { border: medium solid green }
/* but make those in the sidebar use the value of the color property */
#sidebar h2 { border-color: initial; }
/* ...could also be accomplished in CSS1 with 'border: medium solid' */
[edit] For inherited properties
For inherited properties, this behavior is somewhat more unusual since it is not reinforcing the default behavior.
[edit] Specifications
[edit] Browser Compatibility
Supported in Firefox for only some properties (and an increasing number in each version).