trycss_exp_fai_2 在线代码实例

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<html>
<meta charset="utf-8">
<title>编程狮(w3cschool.cn)</title>
<head></head>
<style>
    .alpha1{  
        width:300px;  
        height:200px;  
        background-color:#FF0000;  
        filter:Alpha(Opacity=30);  
        }  
        .ap2{  
        position:relative;  
        }  
</style>
<body>
        <div class="alpha1"> 
            <div class="ap2"> 
                <p>背景为红色(#FF0000)，透明度20%。</p> 
            </div> 
        </div> 
        
</body>
</html>
 
 
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运行结果
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