Enable width style work for content

README.md

@@ -1061,6 +1061,18 @@ try the following in `yoursite/layouts/partials/paige/style-first.css`:
 }
 ```
 
+### Narrow look
+
+By default, the content expands to fill the whole window.
+This can result in very long lines, depending on the window width.
+To use [the recommended line length of 66 characters](https://en.wikipedia.org/wiki/Line_length#Printed_text),
+try the following in `yoursite/hugo.toml`:
+
+```toml
+[params.paige]
+style = "#paige-content { width: 66ch; }"
+```
+
 ### Menu navigation only
 
 If you configure a menu, and intend for it to be sufficient for all navigation,