lovecoding
/
W250511


			
				
					
						
						
							1234567891011121314151617
							<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- 实体字符 -->
    hello &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; world!

    <!-- 10<20  -->
     10&lt;20

     a&#768;
</body>
</html>