docs/mesa3d_theme/static/chevron-up.svg

<svg xmlns="http://www.w3.org/2000/svg" width="10" height="16" viewBox="0 0 10 16">
  <style>
    @media (prefers-color-scheme:dark) {
      svg {
        fill: white;
      }
    }
  </style>
  <path d="M10 10l-1.5 1.5L5 7.75 1.5 11.5 0 10l5-5 5 5z"/>
</svg>