Markup: templates/output/06-components/toplink.html
<a class="c-top-link" href="#top" title="Scroll to top">
<svg viewBox="0 0 16 16" aria-hidden="true" focusable="false" style="pointer-events: none;" width="24px" height="24px">
<use xlink:href="/Images/svg/sprite.symbol.svg#chevron-up"></use>
</svg></a>
Source:
assets/sass/06-components/_components.toplink.scss, line 1