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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