HTML

<svg class="spinner3" version="1.1" id="L3" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
  viewBox="0 0 100 100" enable-background="new 0 0 0 0" xml:space="preserve">
<circle fill="none" stroke="#fff" stroke-width="4" cx="50" cy="50" r="44" style="opacity:0.5;"/>
  <circle fill="#fff" stroke="#000" stroke-width="3" cx="8" cy="54" r="6" >
    <animateTransform
      attributeName="transform"
      dur="2s"
      type="rotate"
      from="0 50 48"
      to="360 50 52"
      repeatCount="indefinite" />

  </circle>
</svg>

CSS


      .spinner3 {
        width: 150px;
        height: 150px;
      }