1.背景随着边框的大小改变
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Insert title here</title> <style type="text/css"> @media only screen and (min- 0px) and (max- 768px) { body { background-color: red; } } @media only screen and (min- 768px) and (max- 992px) { body { background-color: green; } } @media only screen and (min- 992px) { body { background-color: blue; } } </style> </head> <body> </body> </html>
2.bootStrap
|
超小屏幕 手机 0-768px |
小屏幕 平板768-992 |
中等屏幕 电脑992-1200 |
大屏幕 电脑1200-? |
|
Col-xs- |
Col-sm- |
Col-md |
Col-lg |
2.1bootStrap使用
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
</head>
<body>
<div class="container">
<div class="row">
<div class="col-xs-12 col-sm-6 col-md-4" style="background-color: red;">1111</div>
<div class="col-xs-12 col-sm-6 col-md-4" style="background-color: green;">222</div>
<div class="col-xs-12 col-sm-6 col-md-4" style="background-color: blue;">333</div>
</div>
</div>
</body>
</html>