fx

html,
body,
svg {
  height: 100%;
}

<svg viewBox="0 0 480 200" xmlns="http://www.w3.org/2000/svg">
  <defs>
    <radialGradient
      id="gradient1"
      cx="0.5"
      cy="0.5"
      r="0.5"
      fx="0.35"
      fy="0.35"
      fr="5%">
      <stop offset="0%" stop-color="white" />
      <stop offset="100%" stop-color="darkseagreen" />
    </radialGradient>
    <radialGradient
      id="gradient2"
      cx="0.5"
      cy="0.5"
      r="0.5"
      fx="0.75"
      fy="0.35"
      fr="5%">
      <stop offset="0%" stop-color="white" />
      <stop offset="100%" stop-color="darkseagreen" />
    </radialGradient>
  </defs>

  <circle cx="100" cy="100" r="100" fill="url(#gradient1)" />
  <circle cx="340" cy="100" r="100" fill="url(#gradient2)" />
</svg>