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All internet SVG filters are defined within a <defs> element. The <defs> element is short for definitions and contains definition of special elements (such as filters)
All internet SVG filters are defined within a <defs> element. The <defs> element is short for definitions and contains definition of special elements (such as filters).
The <filter> element is used to define an SVG filter. The <filter> element has a required id attribute which identifies the filter. The graphic then points to the filter to use.
The <feGaussianBlur> element is used to create blur effects:
Here is the SVG code:
<svg height="110" width="110">
<defs>
<filter id="f1" x="0" y="0">
<feGaussianBlur in="SourceGraphic" stdDeviation="15"
/>
</filter>
</defs>
<rect width="90" height="90" stroke="green" stroke-width="3"
fill="yellow" filter="url(#f1)" />
</svg>