CSS属性选择器_html/css_WEB-ITnose
p[name]{background:red;} 只使用属性名
p[name=ghr]{background:red;} 指定属性名，并指定了该属性的属性值
p[name~=old]{background:red;}此属性值是一个词列表，并且以空格隔开，其中词列表中包含了一个value词
p[name^=g]{background:pink;}属性值是以g开头的
p[name$=M]{background:#CC0;}属性值是以M结尾的
p[name*=d]{background:#C3C;}属值中包含了value
p[name|=b]{background:#C3C;}属性值是value或者以“value-”开头的值（比如说zh-cn）
IE7及以上支持
<body><p name="bghr">小黑</p><p name="b-ghr old">小白</p><p name="ghr">ghr</p><p name="dp">店铺</p><p name="gzM">gzm</p><p name="xm">小美</p></body>
含type的是类型型，值限制类型
不含type是结构型，限制位置和类型（自己总结的，有问题欢迎指出）
p:nth-child(2) 找p标签父级下的第二个子元素且是p标签
p:nth-child(odd){background:red}/*匹配奇数行*/
p:nth-child(even){background:red}/*匹配偶数行*/
p:nth-child(2n){background:red}
E:nth-last-child(n) 表示E父元素中的第n个字节点，且类型为E从后向前计算 结构型
p:nth-of-type(2) 找p父级下的第二个p元素 类型型
E:nth-of-type(n) 表示E父元素中的第n个E类型字节点
E:nth-last-of-type(n)表示E父元素中的第n个类型为E的子节点,从后向前计算
E:empty 表示E元素中没有子节点。注意：子节点包含文本节点
p:first-child 表示p父元素中的第一个子节点且是p
E:last-child 表示E元素中的最后一个子节点
E:first-of-type 表示E父元素中的第一个节点类型是E的
E:last-of-type 表示E父元素中的最后一个节点类型是E的
E:only-child表示E元素中只有一个子节点。注意：子节点不包含文本节点
E:only-of-type 表示E的父元素中只有一个子节点，且这个唯一的子节点的类型必须是E。注意：子节点不包含文本节点
选择器伪类：
E:target 表示当前的URL片段的元素类型，这个元素必须是E
E:disabled 表示不可点击的表单控件
E:enabled 表示可点击的表单控件
E:checked 表示已选中的checkbox或radio
E:first-line 表示E元素中的第一行
E:first-letter 表示E元素中的第一个字符
E::selection表示E元素在用户选中文字时
E::before 生成内容在E元素前
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