Values

<style>

The style of the column rule.

dashed	The column rule has a dashed line style.
dotted	The column rule has a dotted line style.
double	The column rule has a double solid line style.
groove	The column rule has a grooved style.
hidden	The column rule is hidden.
inset	The column rule has an inset style.
none (by default)	The column rule has no style.
outset	The column rule has an outset style.
ridge	The column rule has a ridged style.
solid	The column rule has a solid line style.