lovecoding
/
test


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        /* #div1{
            background: green;
        } */
        div{
            background: red;
        }
        .aa{
            background: blue;
        }
        /* 优先级 100+10 = 110 */
        #ul2 .list1{
            
        }
        
        
    </style>
</head>
<body>
    <!-- css的选择器优先级的
        id选择器 > class选择器 > 标签选择器  
        100       10            1

    -->
    <div id="div1" class="aa">111</div>
    <ul id="ul1">
        <li class="list1">1111</li>
        <li>2222</li>
        <li class="list1">3333</li>
        <li>4444</li>
    </ul>
    
</body>
</html>