仅次于类型选择符最常用的选择符是类选择符。
After type selectors, the most commonly used selectors are class selectors.
最常用的选择符可能是类型选择符，但是大多数人把它称为标记名或元素选择符。
Perhaps the most commonly used selector is the type selector, though most people think of it as a tag name or element selector.
一个简单选择符或者是一个类型选择符，或者是一个全局选择符，紧跟在后的是零个或多个属性选择符，ID选择符或伪类，次序任意。
A simple selector is either a type selector or universal selector followed immediately by zero or more attribute selectors, ID selectors, or pseudo-classes, in any order.
全局选择符，写做"*"，匹配任意元素类型名。
The universal selector, written "*", matches the name of any element type.
全局选择符，写做"*"，匹配任意元素类型名。
The universal selector, written "*", matches the name of any element type.
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