


Blur Background with CSS without Affecting Content
Question:
For a dynamic popup on a website, you want a background blur effect akin to Vista/Windows 7's Aero Glass. How can you achieve this in CSS while maintaining compatibility with modern browsers?
Answer:
Update (October 2016):
An improved technique leverages pseudoelements and SVG blur filters. See the demo below:
[Demo: Using Pseudo-Element for Background Blur](demo-link)
This approach works cross-browser, except for IE, which doesn't support blur via either CSS or SVG filters.
Original Answer (prior to October 2016):
Using -moz-element() and SVG Blur Filter:
- Use the -moz-element() property to define an element as a background image for another element.
- Apply the SVG blur filter to the background image.
- Optionally, utilize jQuery for scrolling if the background is fixed positioned.
See the demo here:
[Demo: Using -moz-element() for Background Blur](demo-link)
Limitation:
This method is limited to Firefox due to the use of -moz-element(), which is only supported by Mozilla currently. However, there have been efforts to implement it in Webkit browsers, so future support is expected.
The above is the detailed content of How can I achieve a Vista/Windows 7 Aero Glass blur effect for a dynamic popup using CSS, maintaining cross-browser compatibility?. For more information, please follow other related articles on the PHP Chinese website!

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