The content editor offers a list of out-of-the-box HTML contents for landing pages and emails.
You can also import HTML content created outside of Adobe Campaign.
The selected content replaces the current content.
The following formats are supported for import:
an HTML file with an incorporated style sheet
a .zip folder containing the HTML file, the style sheet (.CSS) and the images
There are no constraints on the zip file structure. However, referencing HTML files has to be relative and respect the tree structure of the zip folder.