为什么空间用于在css中分隔事物 [英] Why are spaces used to separate things in css

问题描述

这是在一个wordpress样式表，我不明白的东西：

Here is something in a wordpress stylesheet that I don't understand:

blockquote cite,
blockquote em,
blockquote i {
font-style: normal;
}

blockquote和cite之间的空间是什么？我理解如果他们用逗号分隔，那么blockquote和cite将有font-style：normal;现在他们是用空格分隔的，这是否意味着如果一个blockquote标签被嵌入到一个cite标签，它会得到font-style：normal;？

what does the space between blockquote and cite do? I understand if they are separated by a comma, then both blockquote and cite will have "font-style: normal;" now they are separated by space, does this mean if a blockquote tag is embedded into a cite tag it will get "font-style: normal;"?

谢谢。

推荐答案

这个空间被称为 descendant combinator 。 blockquote cite 在 blockquote 元素中选择任何 cite 同样 blockquote em 和 blockquote i 。

The space is known as the descendant combinator. blockquote cite selects any cite element within a blockquote element. Likewise for blockquote em and blockquote i.

换句话说，它不是如果一个blockquote标签嵌入到一个引用标签，这是另一种方式（此外，你不能把 blockquote 放在 cite s。）

In other words, it's not "if a blockquote tag is embedded into a cite tag", it's the other way around (besides, you can't place blockquotes in cites in the first place).

正如你所注意到的，逗号组选择器序列到同一个规则。

As you note, commas group selector sequences into the same rule.

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