RadialGradient
<svg>
<defs>
<radialGradient id="g">
<stop offset="10%" stop-color="green" />
<stop offset="90%" stop-color="white" />
</radialGradient>
</defs>
<rect width='100%' height='100%' fill='url(#g)'/>
</svg>
<svg>
<defs>
<radialGradient id="g">
<stop offset="10%" stop-color="green" />
<stop offset="90%" stop-color="white" />
</radialGradient>
</defs>
<rect width='100%' height='100%' fill='url(#g)'/>
</svg>