<!DOCTYPE html><html><head><metacharset="utf-8"><title> CSS Values and Units Test: Attribute references (length)</title><metaname="assert"content=" The value of referenced attribute is used correctly as a length (even if it's 0). "/><linkrel="author"title="François REMY"href="mailto:fremycompany.developer@yahoo.fr"/><linkrel="help"href="http://www.w3.org/TR/css3-values/#attr-notation"/><linkrel="match"href="reference/200-200-green.html"/><styletype="text/css">html,body{margin:0px;padding:0px;}html{background:white;overflow:hidden;}#outer{position:relative;background:green;}#outer2{background:red;}#outer{width:200px;height:200px;}#outer2{width:200px;width:attr(data-testtype(<length>),0);height:200px;}</style></head><body><divid="outer"></div><divid="outer2"data-test="0"></div></body></html>