Running an Online Course in Browser Stack
Often the Internet browser can be part of the of the issue. A third party website called BrowserStack allows you to test in various browsers so you can take a screenshot of your results.
1) Go to: http://www.browserstack.com/
2) Sign in or start a Free Trial.
3) Choose a Device/OS in the left column, then pick the browser and version you would like to test. BrowserStack will automatically setup that environment for you.
4) Follow the steps in the Running Course in Debug mode article and take the same screenshots while running the test in BrowserStack. BrowserStack provides a floating control panel to take screenshots, switch between environments, and stop testing.