[1] [CITE@en['''['''css-values''']''' Add the ''lh'' and ''rlh'' units]]
([[frivoal]]著, [TIME[2016-10-14 17:54:21 +09:00]])
<https://github.com/w3c/csswg-drafts/commit/c42ab51f50d271eca0e3448e1fca006161012d99>