1、media
效果为屏幕宽度变化时,背景颜色也变化
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> @media screen and (max- 1024px){ .bg{ background-color: aqua; } } @media screen and (max- 980px) { .bg { background-color: red; } } @media screen and (max- 720px) { .bg { background-color: yellow; } } @media screen and (max- 640px) { .bg { background-color: green; } } @media screen and (max- 320px) { .bg { background-color: darkgray; } } </style> </head> <body class="bg"> </body> </html>
2. 弹性图片
样式如下面的code
.img 和 img
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <style> @media screen and (max- 1024px){ .bg{ background-color: aqua; } } @media screen and (max- 980px) { .bg { background-color: red; } /*使用流体图片*/ img { max- 100%; height: auto; auto9; /* ie8 */ position: absolute; 600px; top:-25%; } .img{ height: 200px; border:1px solid sandybrown; overflow:hidden; margin-bottom:10px; display: block; position: relative; } } @media screen and (max- 720px) { .bg { background-color: yellow; } } @media screen and (max- 640px) { .bg { background-color: green; } } @media screen and (max- 320px) { .bg { background-color: darkgray; } } </style> </head> <body class="bg"> <div style="margin-top: 300px" class="img"> <img src="image/img1.jpg" /> </div> </body> </html>