This visualization is based on the Harvard Business Review article The Decline of Yahoo in Its Own Words. This article includes a single visualization with two drastically different designs (one for desktop, and one for the portrait orientation on mobile).
For each visualization, you can use the three dots to (1) save the image, (2) view the Vega-Lite spec, and (3) see the result in the Online Vega Editor.
The desktop visualization uses a multi-series line chart with annotations that fits well on standard screen sizes.
The phone visualization uses a heatmap that fits the portrait orientation better. Interestingly, this visualization also requires users to scroll on the phone to see all the visualization content.