/* spec information about this property
name= border-left-width
css1= http://www.w3.org/TR/2008/REC-CSS1-20080411/#border-left-width
css2= http://www.w3.org/TR/2008/REC-CSS2-20080411/box.html#propdef-border-left-width
css21= http://www.w3.org/TR/2011/REC-CSS2-20110607/box.html#propdef-border-left-width
css3= http://www.w3.org/TR/2011/CR-css3-background-20110215/#border-left-width
*/