If you make a change to an HTML file after viewing it in a browser, press "Ctrl-F5" in your browser to refresh the browser's view of the document.

Safari is Apple’s own internet browser and is the default browser app on all iMacs and MacBooks. If you’re on the web and want to download a file, it’s easy enough to do so using Safari.

Right-click the link to the file you want to download, and select "Copy Link." The exact wording of the context menu option varies by browser.