Look at these two web pages:

http://cosi119r.s3-website-us-west-2.amazonaws.com/content/lectures/part1/10_rosorganization/

http://cosi119r.s3-website-us-west-2.amazonaws.com/content/lectures/part1/35_move_around/

They are both hosted on s3 (obviously) generated by a static site builder (Nano) from Markdown primarily.

And yet one looks right and on looks like an html dump. So far I suspect a mime type but don’t know how to check it or why this one page is different. Any hints?