Unfortunately, I am not sure of the support Gtk offers for such a simple css method, and it is possible they themselves are using some more complex mathematics to figure out character-based widths. In fact, even Chrome doesn't support it yet. http://www.quirksmode.org/css/units-values/
As a fallback, we could use the default of 0.5em and make an assumption based on that.
`ch` is the unit for character width, which is taken from "0", and if not available is assumed to be 0.5em
The full set of font-relative lengths are: em, ex, ch, & rem. /drafts. csswg.org/ css-values- 3/#font- relative- lengths
You can read more about them here: https:/
Unfortunately, I am not sure of the support Gtk offers for such a simple css method, and it is possible they themselves are using some more complex mathematics to figure out character-based widths. In fact, even Chrome doesn't support it yet. http:// www.quirksmode. org/css/ units-values/
As a fallback, we could use the default of 0.5em and make an assumption based on that.
```
width: 30em; // Roughly 60 characters.
width: 60ch; // Exactly 60 characters.
```