Simon chose to mimic a two-column layout using a table. I’m not sure if a overflow-x style [1] would work on GitHub or improve the responsive design.

[1] https://www.w3schools.com/howto/howto_css_table_responsive.a...

Unfortunately GitHub flavored markdown really limits your options for styling - it doesn't allow CSS at all. https://twitter.com/simonw/status/1281450155170922496

The style="overflow-x:auto;" seems to be the default now. "Ask and thou shall receive"? I'm pretty sure it wasn't scrolling when I first tried it but I may have just started searching first out of curiosity. Several posts indicated that inline CSS was possible on GitHub. I did a quick test and I can't get the original overflow-x:visible; behavior so who knows.