There are times when you may want to add custom content into the announcement popup container. This can easily be done in the same way you would customize any of the templates inside of Timeline Express Pro.
In the Timeline Express – Popups Add-on, we’ve included a template file inside of
timeline-express-popups-add-on/lib/partials/popup-template.php. You can copy this file into your theme root inside of a ‘timeline-express’ directory. Once included in that directory inside of your theme root, Timeline Express – Popups Add-on will then load that template file (example:
wp-content/themes/twentyseventeen/timeline-express/popup-template.php). So make any customizations you want and add custom HTML or markup you need!