<style> div.cmtt-upgrade { display: inline-block; padding: 1em; background: #FFF; border: solid 1px #E0E0E0; max-width: 650px; margin: 1em 0; } </style> <div class="cmtt-upgrade"> <h3>Want more? Get the PRO</h3> <p>Professional version of <?php echo CMTT_NAME; ?> which gives the admin better tools to customize the Glossary Tooltip system behavior: adding customization options, metaboxes, shortcodes, views, 3rd party integrations and a lot more.</p> <a href="<?php echo esc_attr(admin_url('admin.php?page=' . CMTT_PRO_OPTION)); ?>" class="button button-primary">Upgrade to PRO</a> </div>