This is a Pathfinder Pro feature.
You can easily change the look of your entire web page by creating dynamic HTML using the standard or custom field personalization tags.
You can also add different text, images and links to transform your visitors web experience in few easy steps. You could use this to display a different look for your homepage based on the tags of a returning visitor.
Note: This is an advanced feature and requires the reader to have HTML expertise.
Go to Website - Dynamic Code to create or edit.
Just like the Notifications, you can target the dynamic code by adding variants and using different tags for each variant. This means each variant will be only displayed to the web visitors that have the chosen tag. All others will be displayed with the default code.
After creating and saving your content, click on Get HTML code so you can paste it into your website.