Front Page Section 1 is divided into two sections – Front Page 1-a and Front Page 1-b. If you use both, the content is divided in two sections side by side on a desktop view.
If you prefer a full width content section, just use section a and leave b empty.
Section a automatically displays background graphics on the desktop.
In the demo, section a is using an image widget to display a video and section b is a text widget with a button.