Markup: templates/output/04-elements/forms/button/button-readmore.html
<!-- START BUTTON READMORE-->
<button class="btn btn--readmore" title="Read more"><span>Read more</span>
<svg viewBox="0 0 36 36.111" role="img" aria-hidden="true" focusable="false">
<use xlink:href="Images/svg/sprite.symbol.svg#icon-arrow-right"></use>
</svg>
</button>
<!-- END BUTTON READMORE-->
<!-- START DISABLED BUTTON READMORE-->
<button class="btn btn--readmore" disabled="disabled"><span>Disabled read more</span>
<svg viewBox="0 0 36 36.111" role="img" aria-hidden="true" focusable="false">
<use xlink:href="Images/svg/sprite.symbol.svg#icon-arrow-right"></use>
</svg>
</button>
<!-- END DISABLED BUTTON READMORE-->
Source:
assets/sass/04-elements/_elements.forms.scss
, line 912