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                ## 14.1.1.選擇器分類 CSS中的選擇器,大致可以分為以下幾類: * 基礎選擇器 * 關系選擇器 * 屬性選擇器 * 偽類選擇器 * 偽元素選擇器: ## 14.1.2.選擇器語法的符號含義 以下,各選擇器的形式語法中的代號含義如下: * E: 代表“Element”,即元素; * S: 代表“Seletor”,即選擇器; * attr: 代表“attribute”,即屬性;
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