问题描述
据我了解,元素是最不具体的。 (元素与ID)。
请帮助我大致了解选择器的特异性。
< div id =容器>
< div id = firstDiv> CONTAINER< / div>中的FIRST Div
< div id = secondDiv> CONTAINER< / div>中的SECOND Div
< / div>
body {
宽度:780px;
保证金:20px自动;
}
#容器> div:not(:last-of-type){
margin-bottom:0px; / *它比下面的ID选择器更具体? * /
}
#container {
border:15px solid orange;
padding:10px;
}
#firstDiv {
margin:50px; / *这没有生效* /
边框:5px稳定的blueviolet;
}
#secondDiv {
border:5px solid brown;
}
因此,像 #foo
具有 1,0,0
的特异性,而元素选择器如 p
具有 0,0,1
的特异性。在这两个中,ID选择器将获胜,因为 100
大于 1
。
可以在此处找到更具体的(heh)版本,其中还包括伪元素和伪类:
As I understand elements are least specific. (element vs id).Please help me in understanding the specificity of selectors generally.
<div id="container">
<div id="firstDiv">FIRST Div inside CONTAINER</div>
<div id="secondDiv">SECOND Div inside CONTAINER</div>
</div>
body{
width: 780px;
margin: 20px auto;
}
#container > div:not(:last-of-type){
margin-bottom: 0px; /*How its more specific than ID selector below? */
}
#container {
border: 15px solid orange;
padding: 10px;
}
#firstDiv{
margin: 50px; /*This is not taking effect*/
border: 5px solid blueviolet;
}
#secondDiv{
border: 5px solid brown;
}
To understand CSS specificity, read The Specificity Wars. There’s a handy reference sheet, too:
So, a selector like #foo
would have 1,0,0
specificity, while an element selector like p
would have 0,0,1
specificity. Out of these two, the ID selector would "win" as 100
is greater than 1
.
A more specific (heh) version which also includes pseudo-elements and pseudo-classes can be found here: http://www.standardista.com/css3/css-specificity/
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