可见框架-像素选择 -block-inline :块内联元素
-inline-block将对象呈递为内联对象,但是对象的内容作为块对象呈递。旁边的内联对象会被呈递在同一行内,允许空格 可以设置宽度和高度地块元素的属性
visible-md sd sx - block-inline ; inline-block;
hidden:隐藏用法=visible;
class='pull left' 左浮动 class='pull right' 右浮动
affix:绝对定位! margin:0; left:0;
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
<link rel="stylesheet" href="css/bootstrap.css">
</head>
<style>
div[class*='col-']{ background:#666; border:1px solid #039; min-height:50px; color:#FFF;}
</style>
<body>
<div class="container">
<div class="row">
<div class="col-lg-4 visible-sm-block visible-md-block visible-xs-block">col-lg-4 visible-sm-block visible-md-block visible-xs-block 小于960像素出现</div>
<div class="col-sm-12 hidden-sm hidden-xs">col-sm-12 hidden-sm hidden-xs小于960像素隐藏</div>
</div>
</div>
</body>
<script src="js/bootstrap.js"></script>
<script src="js/jquery-1.11.1.js"></script>
</html>
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