CSS术语：这些叫做什么？ [英] CSS terminology: what are these called?

问题描述

考虑：

p {
  ...
}

.foo {
  ...
}

#bar {
  ...
}

CSS中这些语句的正确名称是什么？我见过它们称为选择器，规则或规则集，但这是正确的吗？

What is the correct name for these statements in CSS? I've seen them called selectors, rules or rulesets, but which is correct?

推荐答案

将考虑一个规则：

p {…}

在这种情况下为选择器是：

A selector in this case is:

p

选择器和声明。声明为 property：value ，因此整个规则为：

A rule is made up of selectors and declarations. A declaration is property:value so the entire rule would be:

selector {属性：value}

一个规则可以有多个声明和多个选择器，因此我们实际上可以拥有：

A rule can have multiple declarations and multiple selectors so we can actually have:

selector, selector2
{
  property:value;
  property2:value;
} 

一个规则集将是多个规则。

A rule set would be multiple rules.

这里有一个快速的源，或者 CSS 1规范。

Here's a quick source on this or the CSS 1 Specification.

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