lovecoding
/
2023-05-27


			
				
					
						
						
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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;
        }
     

    </style>
</head>
<body>
    <!-- css选择器的优先级
        style > id选择器 > class选择器 > 标签选择器 
    -->
    <div id="div1" class="aa" style="background:pink">
        你好 哈哈哈 
    </div>
    

</body>
</html>