How to Achieve a Blurred Background Effect on CSS Overlays Without Blurring the Overlay Itself?

Achieving Glass Effect in CSS Overlays: Resolving Blur Issues

Problem: Applying a blur effect on an overlay div proves challenging, leaving the contents behind the overlay unblurred. Seeking a simple and cross-browser solution.

Solution:

The example provided in the jsfiddle exhibits the common issue with blur effects in CSS overlays: they blur the overlay itself instead of its backdrop. To rectify this, consider leveraging the backdrop-filter property.

Updated CSS:

#overlay {
    ... (previous CSS) ...

    backdrop-filter: blur(6px);
}

Advantages:

• More precise: Blurs the backdrop instead of the overlay, achieving the desired effect.
• Cross-browser compatibility: Supported in major browsers, including Chrome, Firefox, and Edge.
• Simplified code: Removes the need for multiple filter properties, providing a cleaner and more maintainable solution.

Note:

Browser support for backdrop-filter may not be perfect, particularly in older versions. However, it offers a significant improvement over the previously implemented CSS filters and is generally sufficient for most use cases where blur effects are non-essential.

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