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CSS How to Make a Website CSS: Cascading Style Sheets Use ID Selectors

I have just started following along in this course using workspace. Previewing is not working. I get a blank page.

I click on the "eye" icon to preview the code in my workspace. I get a blank page going to a web address at http://port-80-89fbrg79qa.treehouse-app.com/. What does this mean?

I'm not sure if this question is current or not. I received an email for it today but it says it's from over 1 year ago.

Can you post a snapshot of your workspace if this is current?