I find travel points and miles to be an engaging hobby because it's enabled me to travel to some amazing places. While I'm not necessarily in the market to help others maximize their acquisition, I saw a potential gap between knowledge of point values vs. redemptions. An example being a friend who used points to fly from Boston to Rochester when the points he used were worth much more than the price paid.
Screenshots of the final site
I finished the project on time and was able to demo it to the class. The calculator works! I even had enough time left at the end to add a nifty (albeit still work in progress/buggy) animation of an airplane before the results display. It's the kind of thing that will add a little bit of that meaningful UX wait time, but perhaps spark a little joy in the process. And the most interesting part (to me) is it was created with only CSS.
I can now say that I know enough to create a very basic HTML based website. I have confidence in my ability to use a browser Inspect Element to figure out what might be going wrong and am able to work with a development team to correct it.