zulip/static/templates/settings/realm_domains_modal.hbs

<div id="realm_domains_modal" class="modal modal-bg hide" tabindex="-1" role="dialog" aria-labelledby="realm_domains_modal_label" aria-hidden="true">
    <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-label="{{t 'Close' }}"><span aria-hidden="true">&times;</span></button>
        <h3 id="realm_domains_modal_label">{{t "Allowed domains" }}</h3>
    </div>
    <div class="modal-body">
        <table class="table table-condensed table-stripped" id="realm_domains_table">
            <thead>
                <th>{{t "Domain" }}</th>
                <th>{{t "Allow subdomains"}}</th>
                <th>{{t "Action" }}</th>
            </thead>
            <tbody>
            </tbody>
            <tfoot>
                <tr id="add-realm-domain-widget">
                    <td><input type="text" class="new-realm-domain" placeholder="acme.com" /></td>
                    <td>
                        <label class="checkbox">
                            <input type="checkbox" class="new-realm-domain-allow-subdomains" />
                            <span></span>
                        </label>
                    </td>
                    <td><button type="button" class="button sea-green small rounded" id="submit-add-realm-domain">{{t "Add" }}</button></td>
                </tr>
            </tfoot>
        </table>

        <div class="alert realm_domains_info"></div>
    </div>
    <div class="modal-footer centered-footer">
        <button class="new-style button rounded" data-dismiss="modal">{{t "Close" }}</button>
    </div>
</div>