The idea of the original was to abandon the grid layout of the table and make each cell it’s own line. Each of those lines is labeled with a pseudo element. This creates a much taller table, requiring more vertical scrolling, but does not require horizontal scrolling. It’s easier to browse the data without losing context of what’s what. The downside is that you might lose the context of data comparison, since you no longer see see cells of data right next to other cells of that type.
(Full Story: Responsive Data Table Roundup | CSS-Tricks)