Here, in the sub folders you can find themes designs, layout and templates to use as they are or modify to you liking and create your own page theme design.
Creating Templates

Page template
Make a copy of a "Default Page" folder. Rename it to your name.
The rule is - your template must be named "index.html" in order to show in browser.
All images and the "page.css" must be put in the "theme" sub folder.
When used as a system wide page template the file must be renamed to "index.htm" and put in the "root" folder.
Start Page Layouts
http://maxdesign.com.au/css-layouts/

Landing Page template
Make a copy of the "Default Page" folder. Rename it to your name.
The rule is - your landing page template must be named "index.html" in order to show in browser.
All images and the "landing-page.css" must be put in the "theme" sub folder.
100 free to use Landing Pages
http://demo.themewagon.com/preview/template-collection-2017
Layouts
Layout are small "snippets" that you can insert into the textarea while editing.
Page Layouts - Bootstrap blocks
http://www.layoutit.com/build