lue.Border.Width.t</a> <span>&#45;&gt;</span> ?&#8288;style:<a href="../../Css_Value/Border/Style#type-t">Css_Value.Border.Style.t</a> <span>&#45;&gt;</span> ?&#8288;color:<a href="../../Css_Value/ColorOrTransparent#type-t">Css_Value.Border.Color.t</a> <span>&#45;&gt;</span> unit <span>&#45;&gt;</span> [&gt; <a href="../../Css_Property#type-border_left">Css_Property.border_left</a> ] <a href="#type-t">t</a></code></dt><dt class="spec value" id="val-make_value"><a href="#val-make_value" class="anchor"></a><c