lovecoding
/
web0715


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        /* .a{
            color: red;
        }
        .b{
            font-size:40px ;
        } */
        /* li[class]{
            color: red;
        } */
        /* li[class=a]{
            color: red;
        } */
        li[class~=a]{
            color: red;
        }
    </style>
</head>
<body>
    <ul>
        <li class="a">hello</li>
        <li class="ab">world</li>
        <li class="b a">你好</li>
        <li>世界</li>
    </ul>
</body>
</html>