Add a var{white-space:nowrap;} rule.

Author: tabatkins

default.css

@@ -137,6 +137,8 @@ code.xml { color: #600 }	/* inline XML */
 .descriptor { }			/* name of a CSS descriptor (SPAN) */
 .type { font-style: italic }	/* A <type> value for a property */
 
+var { white-space: nowrap;}
+
 dfn { font-weight: bolder; }
 
 .issue, .note, div.example, pre.example {