una/template/menu_horizontal.html

<ul class="bx-menu-hor bx-menu-object-__object__ flex flex-row space-x-1">
    <bx_repeat:menu_items>
        <li class="bx-menu-item __name__ __class_add__ bx-stl-mil-wo-gaps">
            <a href="__link__" <bx_if:onclick>onclick="__onclick__"</bx_if:onclick> __attrs__>
                <span class="bx-menu-item-icon bx-stl-mii">
                    <bx_include_auto:menu_icon.html />
                </span>
                <bx_if:title><span>__title__</span></bx_if:title>
            </a>
        </li>
    </bx_repeat:menu_items>
</ul>