jellyfin-web/dashboard-ui/livetvtunerprovider-m3u.html

<div id="liveTvTunerProviderM3UPage" data-role="page" class="page type-interior liveTvSettingsPage withTabs" data-helpurl="https://github.com/MediaBrowser/Wiki/wiki/Live%20TV" data-require="scripts/livetvtunerprovider-m3u,emby-input,emby-button">

    <div data-role="content">
        <div class="content-primary">

            <form>
                <h1>M3U Setup</h1>

                <div class="inputContainer">
                    <div style="display: flex; align-items: center;">
                        <div style="flex-grow:1;">
                            <input is="emby-input" class="txtDevicePath" label="${LabelFileOrUrl}" required="required" autocomplete="off" />
                        </div>
                        <button type="button" is="paper-icon-button-light" id="btnSelectPath" class="autoSize"><i class="md-icon">search</i></button>
                    </div>
                </div>
                <div>
                    <button is="emby-button" type="submit" class="raised submit block"><i class="md-icon">check</i><span>${ButtonSave}</span></button>
                    <button is="emby-button" type="button" class="raised cancel block btnCancel" onclick="history.back();"><i class="md-icon">close</i><span>${ButtonCancel}</span></button>
                </div>
            </form>
        </div>
    </div>
</div>