una/modules/base/text/template/author.html

<div class="bx-base-text-author bx-def-unit">
    <a href="__author_url__"><img class="bx-def-thumb bx-def-thumb-size" src="__author_thumb_url__" /></a><div class="bx-def-unit-info bx-def-thumb-size-max-height bx-def-padding-left"><span class="bx-def-font-grayed bx-def-font-small">__author_desc__</span><br /><a class="bx-def-unit-info-title" href="__author_url__">__author_title__</a></div>
</div>

<bx_if:addon>
    <div class="bx-def-margin-sec-top">
        __content__
    </div>
</bx_if:addon>