The site does not fit on my screen can I still use it?
Yes. Australia.gov.au has been designed to scale between some of the most commonly-used screen widths. On a normal desktop browser, the site will shrink' to fit in a 1024px-wide screen, and expand to fill a 1280px-wide screen. Screens narrower than 1024px will need to scroll horizontally to see some portions of the site.