jellyfin-web/dashboard-ui/components/guestinviter/guestinviter.template.html

<div class="dialogHeader" style="margin:0 0 2em;">
    <button is="paper-icon-button-light" class="btnCancel" tabindex="-1"><iron-icon icon="arrow-back"></iron-icon></button>
    <div class="dialogHeaderTitle">
        ${HeaderInviteUser}
    </div>
</div>

<form class="addUserForm" style="max-width: none;margin:0;">

    <div class="inputContainer">
        <input is="emby-input" type="text" id="txtConnectUsername" value="" label="${LabelConnectGuestUserName}" required />
        <div class="fieldDescription">
            <div>${LabelConnectGuestUserNameHelp}</div>
            <div style="margin-top: .25em;"><a href="http://emby.media/connect" target="_blank">${ButtonLearnMoreAboutEmbyConnect}</a></div>
        </div>
    </div>

    <br />

    <emby-collapsible title="${HeaderShareMediaFolders}">
        <div class="librarySharingList">

        </div>
    </emby-collapsible>
    <p class="fieldDescription" style="margin-top:.5em;">${MessageGuestSharingPermissionsHelp}</p>
    <br />
    <button is="emby-button" type="submit" class="raised submit block"><iron-icon icon="check"></iron-icon><span>${ButtonSendInvitation}</span></button>
</form>