Another way to solve this might be by adding some kind of alert message (https://getbootstrap.com/docs/4.0/components/alerts/). As our theme supports Bootstrap 4, you could use the same HTML tags as the demo and replace the text by your warning message. However, to write the PHP conditions necessary to display your message, you will require custom development work.
You're trying to setup your theme but you're experiencing errors when importing the demo content? Or you've just followed the setup guide but your website doesn't look exactly like our demo? These are common issues for which you can find easy and quick fixes.
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