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The difference between # and . in css_html/css_WEB-ITnose

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Release： 2016-06-24 11:39:53

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The difference between # and . in css

2009-03-04 14:43 fyws Category: Html/Css | Viewed 1911 times

css的#和.的区别如：#home #h3 {  padding-top:0;  padding-bottom:0;  }.pop #h2, .pop #h3 {  position:static;  background:none;  border-width:0;  width:auto;  }其中#和.的区别是什么

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2009-03-04 14:58

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用 # 定义的css 要用 id="home" 来引用用 . 定义的css 要用 class="pop" 来引用像下面#home #h3 表示 id为 home的网页元素 里面的 id为 h3的元素引用 {padding-top:0;padding-bottom:0; }样式<div id="home">   <div id="h3"> 这个div用 #home #h3 样式</div></div><div class="pop>   <div id="h2"> 这个div用 .pop #h2 样式</div></div><div class="pop>   <div id="h3"> 这个div用 .pop #h3 样式</div></div>.pop #h2   和 .pop #h3 是一样的

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css的#和.的区别

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