Viewport resolution (CSS)

What is the resolution of my viewport on this screen?

1440 width (CSS width)
718 height (CSS height) Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/137.0.0.0 Safari/537.36 Prerender (+https://github.com/prerender/prerender)

5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) HeadlessChrome/137.0.0.0 Safari/537.36 Prerender (+https://github.com/prerender/prerender)