I like the idea behind this article, but "Responsive Tables #2: Flexbox" really is a pretty good example of what _not_ to do.
Just hiding the table header definitely does not work - this is how I first "read" the data:
- Slice of Pizza = 450
- 95% = $5.00
- Common = 8/10
And this clearly doesn't make any sense at all.
PS: I would love to see Markdown formatting make it to HN comments one day...