jellyfin-web/src/apps/dashboard/controllers/plugins/installed/index.html

<div id="pluginsPage" data-role="page" class="page type-interior pluginConfigurationPage fullWidthContent" data-title="${TabPlugins}">
    <div>
        <div class="content-primary">
            <div class="sectionTitleContainer flex align-items-center">
                <h2 class="sectionTitle">${TabMyPlugins}</h2>
            </div>
            <div class="inputContainer">
                <input id="txtSearchPlugins" name="txtSearchPlugins" type="text" is="emby-input" label="${Search}" />
            </div>
            <div class="installedPlugins"></div>
        </div>
    </div>
</div>