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CSS外部样式表定义的时候，类名排列定义的属性是什么意思？_html/css_WEB-ITnose

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Release： 2016-06-21 09:42:12
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比如有三个控件，div1(class="div1")、div2(class="div2")、div3(class="div3")，在样式表中定义的时候这种写法是什么意思？ 
.div1 .div2 .div3{    background-color: red;}
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难道是所有的类都满足定义的属性？求解 。

回复讨论(解决方案)

table.common {
AAAAA
}

table.common th{
BBBBB
}

table.common td{
CCCCC
}

最常用的是这样的，比如当表格引入了一个common的样式时候。他下面的TH标签就自动引入BBBBB，TD标签就自动引入CCCCCC

空格分隔的css选择器表示归属关系
.div1 .div2 .div3
将选中class为div1的标签内部class为div2的标签内部的calss为div3的标签，表达起来比较绕，其实很贱单


 

  

 


这种div3将被应用该样式

空格分隔的css选择器表示归属关系
.div1 .div2 .div3
将选中class为div1的标签内部class为div2的标签内部的calss为div3的标签，表达起来比较绕，其实很贱单


 

  

 


……
我想到过这里，但是没想到是真的，用风格包真纠结。不管怎么说谢了。
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CSS外部样式表定义的时候，类名排列定义的属性是什么意思？
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