我有一个关于引导列布局的问题。是否需要为每个设备宽度指定列布局?例如,我希望有一些项目的细节,这将占用一半的屏幕在中心。因此,我用类col-*-6和col-*-offset-3做了一个包装器col-*-offset-3(因此它将包含6列并偏移它3列)。
然后,在这个元素中,我将有一个子元素,它将包含3列,另一列将用9来填充容器的全部宽度。
<div class="col-md-6 col-md-offset-3 toppad">
<table>
<tr><td class="col-md-3">Project ID:</td><td class="col-md-9">{$project['name']}</td></tr>
</table>
</div>这是正确的吗?它是否有可能使它工作在所有的设备,而不编码他们每一个?
发布于 2015-07-05 23:14:54
LubošSuk,你好。
你的主要问题(需要所有课程).是的。
如果您想要控制如何在所有设备上查看此文件,则需要使用所有col-xx-xx类.
或选择正确的单个类,就像我在这里为您展示的演示中显示的那样。
如果您使用col-xs-xx而不是col-md-xx,这种方式也可以工作。
您只使用一个col-md-xx类的红色和灰色块选项也不会像您想要的那样工作,因为两者都会并排呆在一起。
您将看到红色和灰色块只使用您的col-md-xx和他们都松散的地方,他们需要。他们开始使用Stack。
把主块放在中间的方法是right....But.当您使用col-xx-offset-x,并且希望/需要div块在一个小型设备上全屏运行时,您必须在这个视图中对这个类进行零点。
演示中的第二个块显示了何时可以控制偏移量以达到完全宽度。
如果您希望更多地控制row width,请查看本演示中的底部选项。
这是小提琴。

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="../../favicon.ico">
<title>Starter Template for Bootstrap</title>
<!-- Bootstrap core CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">
<style>
body {
padding-top: 50px;
}
.spacer {
margin-top: 2%;
margin-bottom: 2%;
}
.glyph-text {
color: darkorange;
font-size: 1.3em;
}
.block {
min-height: 200px;
background-color: darkorange;
}
.block1 {
min-height: 50px;
background-color: darkorange;
}
.block2 {
color: #fff;
min-height: 40px;
margin-top: 2%;
margin-bottom: 2%;
background-color: blueviolet;
}
.block3 {
min-height: 40px;
margin-top: 2%;
margin-bottom: 2%;
background-color: steelblue;
}
.block-a {
color: #fff;
height: 40px;
margin-top: 2%;
margin-bottom: 2%;
background-color: red;
}
.block-b {
color: #fff;
height: 40px;
margin-top: 2%;
margin-bottom: 2%;
background-color: grey;
}
.center {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
margin: auto;
}
.center-row {
position: absolute;
left: 0;
right: 0;
margin: auto;
}
</style>
</head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top ">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand " href="#">Project name</a>
</div>
<div id="navbar" class="collapse navbar-collapse">
<ul class="nav navbar-nav navbar-right">
<li class="active"><a href="#">Home</a></li>
<li><a href="#about">About</a></li>
<li><a href="#contact">Contact</a></li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<div class="container col-lg-12">
<div class="text-center">
<h3>The RED and GREY blocks only use the one col-md-xx class.</h3>
</div>
<div class="row col-md-6 col-md-offset-3 block">
<div class="col-md-9 block-a">
col-md-9
<p class="text-center">
<span class="glyphicon glyphicon-remove"></span>
</p>
</div>
<div class="col-md-3 block-b">
col-md-3
<p class="text-center">
<span class="glyphicon glyphicon-remove"></span>
</p>
</div>
<div class="col-xs-9 col-sm-9 col-md-9 col-lg-9 block2">
col-ALL-9
<p class="text-center">
<span class="glyphicon glyphicon-ok glyph-text"></span>
</p>
</div>
<div class="col-xs-3 col-sm-3 col-md-3 col-lg-3 block3">
col-ALL-3
<p class="text-center">
<span class="glyphicon glyphicon-ok glyph-text"></span>
</p>
</div>
<div class="col-xs-9 block2">
col-xs-9
<p class="text-center">
<span class="glyphicon glyphicon-ok glyph-text"></span>
</p>
</div>
<div class="col-xs-3 block3">
col-xs-3
<p class="text-center">
<span class="glyphicon glyphicon-ok glyph-text"></span>
</p>
</div>
<div class="text-center">
row col-md-6 col-md-offset-3
</div>
</div>
</div><!-- /.container -->
<div class="container col-lg-12 spacer"></div>
<div class="container col-lg-12">
<div class="row col-xs-12 col-xs-offset-0 col-sm-8 col-sm-offset-2 col-md-6 col-md-offset-3 block1">
<div class="col-xs-9 col-sm-9 col-md-9 col-lg-9 block2">
col-ALL-9
<p class="text-center">
<span class="glyphicon glyphicon-ok glyph-text"></span>
</p>
</div>
<div class="col-xs-3 col-sm-3 col-md-3 col-lg-3 block3">
col-ALL-3
<p class="text-center">
<span class="glyphicon glyphicon-ok glyph-text"></span>
</p>
</div>
<div class="col-xs-9 block2">
col-xs-9
<p class="text-center">
<span class="glyphicon glyphicon-ok glyph-text"></span>
</p>
</div>
<div class="col-xs-3 block3">
col-xs-3
<p class="text-center">
<span class="glyphicon glyphicon-ok glyph-text"></span>
</p>
</div>
<div class="text-center">
row col-xs-12 col-xs-offset-0 col-sm-8 col-sm-offset-2 col-md-6 col-md-offset-3
</div>
</div>
</div><!-- /.container -->
<div class="container col-lg-12 spacer"></div>
<div class="container col-lg-12">
<div class="row col-xs-11 col-sm-9 col-md-7 col-lg-5 block center-row">
<div class="col-xs-9 col-sm-9 col-md-9 col-lg-9 block2">
col-ALL-9
</div>
<div class="col-xs-3 col-sm-3 col-md-3 col-lg-3 block3">
col-ALL-3
</div>
<div class="col-xs-9 block2">
col-xs-9
</div>
<div class="col-xs-3 block3">
col-xs-3
</div>
<div class="text-center">
row col-xs-11 col-sm-9 col-md-7 col-lg-5
<p>The row is not using any OFFSET.</p>
<p>The row is centered, using custom css.</p>
</div>
</div>
</div><!-- /.container -->
<!-- Bootstrap core JavaScript -->
<!-- Placed at the end of the document so the pages load faster -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</body>
</html>
https://stackoverflow.com/questions/31232434
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