If you aren’t logged in, click the login link in the top-right corner of the page, then enter your Steam email address and password and click Sign in. If you haven’t logged into Steam for several weeks, you may be prompted to enter a code that Steam will send to your email address to ensure it’s you.
You can also hold down Ctrl (or ⌘ Command+⌥ Option for Mac) and tap U to open the page source menu. This shortcut works for most browsers, including Microsoft Edge and Safari. If you aren’t automatically taken to the new tab, click it to view the Page Source.