This is what WordPress said about its 2017 flagship theme:-
Twenty Seventeen brings your site to life with header video and immersive featured images. With a focus on business sites, it features multiple sections on the front page as well as widgets, navigation and social menus, a logo, and more. Personalize its asymmetrical grid with a custom color scheme and showcase your multimedia content with post formats. Our default theme for 2017 works great in many languages, for any abilities, and on any device.
It was the first site that permitted video headers as well as static images (although this didn’t include audio)
It could be set up as a landing page design with multiple sections on the front page. Each of these sections was a page in its own right so you still had the opportunity to create multi-page SEO instead of being restricted to just one page.
Subsequent modifications by individual developers converted it into a scrolling single page layout (Page scroll to id – http://manos.malihu.gr/).
Full width featured images added to the dramatic effect.
Out of the box the choice is single or two column layout, However there is a block of CSS that you can add via the Customize -> Additional CSS that lets you alter the width of the one column page to your chosen percentage.
I do not remember the source of CSS but can email it to you on request.
Other modifications have been created by various developers. Have a look on Google or Youtube for more information.
If only they added audio…….