A Dropbox folder is created for your website e.g. /Apps/My.DropPages/(your-site-name). By default this contains a Public folder for creating a static website.
For a static website simply add all website files to the Public folder.
To use the dynamic site features of DropPages (see blog demo) you need to use the folder structure detailed below:
Add site pages here.
Add static files here such as CSS, JavaScript and images.
Add HTML templates here.