The opacity() Function

Applies transparency to the input image. A value of 0% makes the image completely transparent while a value of 100% leaves the image unchanged. This property is similar to the "opacity" CSS property.

Syntax for opacity()

	Syntax
CSS	opacity( [ <number [0,∞]> | <percentage [0,∞]> ]? )

Recommended Links

• CanIUse.com: Search "opacity()" (compatibility information)
• CanIEmail.com: Search "opacity()" (email client compatibility information)
• Filter Effects Level 1: opacity()
• MDN: opacity() (filter function)

Search Engine Links (for more information)

• Bing "CSS opacity function"
• Google "CSS opacity function"