Image shows a webpage mockup. Seems its the largest area with 16:9 aspect ratio you can have is 1040 px / 585 px by basic settings on a 1366 px / 768 px screen if you want to preserve space for the title.
More Images from
screen mockup 2 free icon was designed by Lazur URH for icons Png and presented to its users.
Lazur URH
1/2/2018