`s` / `m` 用于指定内容的尺寸，会被继承到内部的组件上。而 `narrow` / `medium` / `wide` / `fullscreen` / `auto` 是对话框本身所占区域的大小，可以与 `s` / `m` 混合使用。 `s` / `m` are used to specify size for internal content and will be inherited by components inside the dialog. While `narrow` / `medium` / `wide` / `fullscreen` / `auto` are used to specify the dimension of the dialog itself, thus can be used together with `s` / `m`.