How can I set width to be "container" in config?

[pinkfrog9]

It seems to me I can only set width as "container" in the toplevel, but not in config.view

[pinkfrog9]

Another related question is, in the doc: https://altair-viz.github.io/user_guide/customization.html#defining-a-custom-theme

We can set "width" in config.view.

However, in vega-lite documentation: https://vega.github.io/vega-lite/docs/spec.html#config. There is no "width" attribute, the only thing is "continuousWidth" and "discreteWidth".