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pseudo translation of useful posts, book reviews, remarks,etc. twitter: feeddict

仕様書(http://www.w3.org/TR/REC-CSS2/selector.html)より


擬似要素はサブジェクトの後ろにしか付けられない。サブジェクトとは、セレクターと一致するHTMLの要素のことか(a要素、li要素、等々)


The elements of the document tree that match a selector are called subjects of the selector. A selector consisting of a single simple selector matches any element satisfying its requirements. Prepending a simple selector and combinator to a chain imposes additional matching constraints, so the subjects of a selector are always a subset of the elements matching the rightmost simple selector.