Layout the html elements as they appear in the code.
Add the CSS to format the document - found in the code.
If you add a little at a time and refresh, you get a better sense of how the CSS elements are working - giving yourself a better understanding of CSS as a whole.
Notice how <!-- html comments --> are used around the CSS
Add the JavaScript to make the progress indicator work as desired.
Notice how <!-- html comments --> are used around the JavaScript
Validate your HTML5 code, you should have zero errors.
Code
Here is the code for this entire exercise. Proper use would be: look at the code to make sure you are approaching the assignment the correct way. Then try to do it on your own. Then use the code to make sure you've done it correctly. Improper use would be: copying without interpreting, which would result in not really learning what you're doing. The code is provided to help you be successful and so that you don't have to ask as many questions about the assignment.