selector

• Element itself by assigning the css style selector as the
  元素本身，方法是将该css样式选择器分配给该元素的
• Event selectors and event groups
  事件选择器和事件组
• Object that is serialized by the specified surrogate selector
  的对象替换为一个由指定的代理项选择器序列化的
• Shows the different event groups and event selectors that we used
  显示了我们使用的不同事件组和事件选择器。
• The selector and declaration are positioned on the same line , as shown
  选择器和声明位于同一行上，如下所示。
• Css pseudo - classes are used to add special effects to some selectors
  Css伪类可用来给一些选择器加上特殊效果。
• Degree radian grade selector
  度弧度梯度选择器
• Each rule has two fundamental parts , the selector and the declaration block
  每条规则有两个部分：选择符、声明。