Try clicking on the heading, it is a link to the full ad. This applies from both the classified page if you access it via the green tab at the top, or via the “latest ads” window down the left hand side.
Generally anything around here that is in blue and underlined is a link. If you want to keep the original page open, you can click with the right button on a link and then select “open in new window:” or “open in new tab”, depending on your browser
regards
John