How Can I Create SVG Drop Shadows Using CSS3 Filters?

SVG Drop Shadow Using CSS3

Creating drop shadows for SVG elements using CSS3 may seem confusing, especially given the lack of direct support for traditional box-shadow and -webkit-box-shadow properties. However, there is a viable workaround using CSS filters.

Using CSS Filters

CSS filters provide a way to apply visual effects to SVG elements. To create a drop shadow using this method, you can use the filter property with the drop-shadow() function.

Syntax

.element {
  filter: drop-shadow(horizontal-offset vertical-offset blur-radius color);
}

Example

.shadow {
  filter: drop-shadow(3px 3px 2px rgba(0, 0, 0, 0.7));
}

Compatibility

The drop-shadow() filter is supported in modern browsers, including:

• Webkit browsers
• Firefox 34
• Edge

Polyfill

For browsers that do not support the drop-shadow() filter, you can use a polyfill. One popular polyfill is [CSS Shadow](https://github.com/mdn/css-shadow), which provides support for Firefox < 34 and IE6 .

Applying the Drop Shadow

You can apply the drop shadow to any SVG element. Simply add the shadow class to the element:

Conclusion
Using CSS filters, you can create drop shadows for SVG elements with minimal coding effort. This technique is compatible with modern browsers and supports cross-browser rendering using a polyfill.
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