
<div id="postbox-container-1" class="postbox-container">

    <div class="meta-box-sortables">

        <div class="postbox">

            <div class="handlediv" title="Click to toggle"><br></div>
            <!-- Toggle -->

            <h2 class="hndle"><span><?php esc_attr_e(
                        'Update Themes', 'wp_admin_style'
                    ); ?></span></h2>

            <div class="inside">
                <input class="btn btn-primary" type="submit" form="update_themes_form" name="edit_internal" value="<?php esc_attr_e('Update'); ?>"/>
            </div>
            <!-- .inside -->

        </div>
        <!-- .postbox -->


    </div>
    <!-- .meta-box-sortables -->

</div>

