panel/assets/arcs_spinner.svg

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="margin: auto; background: none; display: block; shape-rendering: auto;" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid">
  <circle cx="50" cy="50" r="32" stroke-width="8" stroke="{color}" stroke-dasharray="50.26548245743669 50.26548245743669" fill="none" stroke-linecap="round">
    <animateTransform attributeName="transform" type="rotate" repeatCount="indefinite" dur="1s" keyTimes="0;1" values="0 50 50;360 50 50"></animateTransform>
  </circle>
</svg>