hexo-theme-keep/layout/_partial/side-tools.ejs

<div class="side-tools-container">

    <ul class="side-tools-list">
        <li class="tools-item tool-font-adjust-plus flex-center">
            <i class="fas fa-search-plus"></i>
        </li>

        <li class="tools-item tool-font-adjust-minus flex-center">
            <i class="fas fa-search-minus"></i>
        </li>

        <li class="tools-item tool-expand-width flex-center">
            <i class="fas fa-arrows-alt-h"></i>
        </li>

        <li class="tools-item tool-dark-light-toggle flex-center">
            <i class="fas fa-moon"></i>
        </li>

        <!-- rss -->
        <% if (theme.rss.enable && config.feed) { %>
            <li class="tools-item rss flex-center">
                <a class="flex-center" href="<%= '/' + config.feed.path %>" target="_blank"><i class="fas fa-rss"></i></a>
            </li>
        <% } %>

        <li class="tools-item tool-scroll-to-top flex-center">
            <i class="fas fa-arrow-up"></i>
        </li>

        <li class="tools-item tool-scroll-to-bottom flex-center">
            <i class="fas fa-arrow-down"></i>
        </li>
    </ul>

    <ul class="tools-ul-1">
        <li class="tools-item tool-toggle-show flex-center">
            <i class="fas fa-cog fa-spin"></i>
        </li>

    </ul>
</div>