CSS BORDER-RIGHT-WIDTH

This property controls the thickness (width) of the right border of an element’s rendering box. Negative values are not allowed.

Example
strong { border-right-width: 10px }

this is a test

Possible Values
Value Description
inherit Explicitly sets the value of this property to that of the parent.
thin medium thick Renders a “thin”, “medium” or “thick” border on the right side of the element's rendering box. The actual thickness of these border values is not specified, but “thin” should have a smaller thickness than “medium”, which should have a smaller thickness than “thick”.
[length] Sets the width of the border on the right side of the element's rendering box to an explicit measurement.