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    <p>Here's an <a href="http://xn--dahlstrm-t4a.net/svg/filters/arrow-with-dropshadow.svg" rel="noreferrer">example</a> of applying dropshadow to some svg using the 'filter' property. If you want to control the opacity of the dropshadow have a look at <a href="http://xn--dahlstrm-t4a.net/svg/filters/arrow-with-dropshadow-lighter.svg" rel="noreferrer">this example</a>. The <code>slope</code> attribute controls how much opacity to give to the dropshadow.</p> <p>Relevant bits from the example:</p> <pre><code>&lt;filter id="dropshadow" height="130%"&gt; &lt;feGaussianBlur in="SourceAlpha" stdDeviation="3"/&gt; &lt;!-- stdDeviation is how much to blur --&gt; &lt;feOffset dx="2" dy="2" result="offsetblur"/&gt; &lt;!-- how much to offset --&gt; &lt;feComponentTransfer&gt; &lt;feFuncA type="linear" slope="0.5"/&gt; &lt;!-- slope is the opacity of the shadow --&gt; &lt;/feComponentTransfer&gt; &lt;feMerge&gt; &lt;feMergeNode/&gt; &lt;!-- this contains the offset blurred image --&gt; &lt;feMergeNode in="SourceGraphic"/&gt; &lt;!-- this contains the element that the filter is applied to --&gt; &lt;/feMerge&gt; &lt;/filter&gt; &lt;circle r="10" style="filter:url(#dropshadow)"/&gt; </code></pre> <p>Box-shadow is defined to work on CSS boxes (read: rectangles), while svg is a bit more expressive than just rectangles. Read the <a href="http://www.w3.org/Graphics/SVG/IG/resources/svgprimer.html#filters" rel="noreferrer">SVG Primer</a> to learn a bit more about what you can do with SVG filters.</p>
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    1. POSVG drop shadow using css3
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    1. USNacho Coloma
    1. USErik Dahlström
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    1. COIs there a way of controlling the opacity of the dropshadow?
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      1. USHugh Guiney
    2. CO@HughGuiney: yes, of course. Here's an example of one way of doing that, http://xn--dahlstrm-t4a.net/svg/filters/arrow-with-dropshadow-lighter.svg. Just vary the `slope` attribute to tweak how much opacity you want.
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      1. USErik Dahlström
    3. CONote that Internet Explorer and Safari do not support SVG filters yet: http://www.w3schools.com/svg/svg_feoffset.asp
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      1. USLorenzo Polidori
 

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