If you use the Minimal theme there are some preset width options to be used on a per page base through the cssClass fields, see Dataview return unique list in table column - #5 by holroy
Some caveats related to this method:
- Settings > Editor > Readable line length needs to be turned off (in my experience)
- You need to install (and enable) the Contextual Typography plugin
- You might want to change the overall length options in Settings > Minimal Theme settings
- And now you can set your
cssClassto stuff liketable-100,table-wideortable-maxand various other helper classes