<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title></title> <style type="text/css"> body,div{ padding:0; margin:0; } nav{ width:1000px; margin:0 auto; height:auto; } div{ box-sizing: border-box; float:left; border:1px dashed black; padding:4px; } div>img{ width:100%; height:auto; } div>span{ display: block; width:100%; height:auto; text-align: center; padding-bottom:2px; } @media screen and (max-width: 1950px){ div{ width:200px; } } @media screen and (max-width: 1050px){ div{ width:50%; } } @media screen and (max-width: 600px){ div{ width:100%; } } </style> </head> <body> <nav> <div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div> <div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div><div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div><div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div><div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div><div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div> <div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div> <div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div> <div> <img src="https://www.runoob.com/wp-content/uploads/2016/04/img_fjords.jpg"> <span> hello world! </span> </div> </nav> </body> </html>
手机下
平板电脑下
大屏幕下