Looks nice, but when the Contents column is folded, there's a huge white margin on the left even when the contents on the right don't fit into the page widths,

Looks nice, but when the Contents column is folded, there's a huge white margin on the left even when the contents on the right don't fit into the page widths, as for example with a big table like here: https://en.wikipedia.org/wiki/List_of_Falcon_9_and_Falcon_Heavy_launches https://en.wikipedia.org/wiki/List_of_Falcon_9_and_Falcon_He....