Dogger cant be installed

I am getting an error when trying to install the Dogger theme into WordPress. This is the error:

dogger/css Template is missing. Standalone themes need to have a index.php template file. Child themes need to have a Template header in the style.css stylesheet.

I have tried manually uploading the entire folder into the Themes via FTP, and also tried the easy upload through Themes installation on WP. Both fail due to this CSS issue.

Hi there

You are truing to install HTML template into WordPress, it will not work, its an html template and can not be used in the WordPress as a theme