Specifies the transparency of an element. Specify a value between 0.0-1.0.
Platform Support
IE | Netscape | Mozilla | Opera | Safari | 6.0+ | no | 1.5+ | 7.0+ | 1.2+ |
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Usage
[alpha-value]
Example
For a demonstration of the opacity attribute for table columns, see the demo page on quirksmode:
http://www.quirksmode.org/css/opacity.html
Remarks
Available in CSS3 according to W3C standards.
Availability
W3C CSS3