CSS | opacity() Function
The opacity() function is an inbuilt function which is used to apply a filter to the image to set the transparency of the image.
Syntax:
opacity( amount )
Parameters: This function accepts single parameter amount which holds the amount of transparency. The value of opacity is set in terms of number and percentage. The value 0% represents the complete transparent image and 100% represents the original image.
Below example illustrates the opacity() function in CSS:
Example:
html
<!DOCTYPE html><html><head> <title>CSS opacity() Function</title> <style> h1 { color:green; } body { text-align:center; } .opacity_effect { filter: opacity(30%); } </style></head><body> <h1>GeeksforGeeks</h1> <h2>CSS opacity() function</h2> <img class="opacity_effect" src= alt="GeeksforGeeks logo"></body></html> |
Output:
Supported Browsers: The browsers supported by opacity() function are listed below:
- Google Chrome 18 and above
- Edge 12 and above
- Internet Explorer not supported
- Firefox 35 and above
- Safari 6 and above
- Opera 15 and above
![https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190710102234/download3.png"](https://media.geeksforgeeks.org/wp-content/cdn-uploads/20190710102234/download3.png"){kind=link}
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