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  • CSS经验积累

     1.CLASS和ID的优先级比较.

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">

    <head>
    <meta content="text/html; charset=utf-8" http-equiv="Content-Type" />
    <title>无标题 1</title>
    <style type="text/css">
        .a h1
    {
        color
    :fuchsia;
    }
        .b h1
    {
        color
    :lime;
    }
        #a h1
    {
        color
    :fuchsia;
    }
        #b h1
    {
        color
    :lime;
    }

    </style>
    </head>

    <body>
    <div class="a">
        
    <h1>CLASS在前</h1>
        
    <div id="b">
            
    <h1>ID在后</h1>
        
    </div>
    </div>
    <div class="a">
        
    <h1>CLASS在前</h1>
        
    <div class="b">
            
    <h1>CLASS在后</h1>
        
    </div>
    </div>
    <div id="a">
        
    <h1>ID在前</h1>
        
    <div class="b">
            
    <h1>CLASS在后</h1>
        
    </div>
    </div>
    <div id="a">
        
    <h1>ID在前</h1>
        
    <div id="b">
            
    <h1>ID在后</h1>
        
    </div>
    </div>

    </body>

    </html>

     结论:上面的代码说明了在CSS样式中ID的优先级别比CLASS要高.(IE 6 7 8 FF  C结果一致)

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  • 原文地址:https://www.cnblogs.com/answercard/p/1903639.html
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