Providing the width as a percentage directly to the Canvas components seems to ignore the '%' and render the Canvas in terms of 'px' - i.e. if one provides "100%", the canvases turn out being "100px" wide.
Conversely, not providing the width, makes them take a default width of ~"600px".
So as far as I can understand, there's no way to make the Canvases take up their parent's widths.
cc @ranajitbanerjee
Providing the width as a percentage directly to the Canvas components seems to ignore the '%' and render the Canvas in terms of 'px' - i.e. if one provides "100%", the canvases turn out being "100px" wide.
Conversely, not providing the width, makes them take a default width of ~"600px".
So as far as I can understand, there's no way to make the Canvases take up their parent's widths.
cc @ranajitbanerjee