//分别为:屏幕宽度和设备一致、初始缩放比例、最大缩放比例和禁止用户缩放 <meta name="viewport" content="width=device-width, initial-scale=1,maximum-scale=1, user-scalable=no">
//固定宽度 <div class="container"> ... </div> //100%宽度 <div class="container-fluid"> ... </div>
//创建一个响应式行
<div class="container">
<div class="row">
...
</div>
</div>
//创建最多 12 列的响应式行
<div class="container">
<div class="row">
<div class="col-md-1 a">1</div>
<div class="col-md-1 a">2</div>
<div class="col-md-1 a">3</div>
<div class="col-md-1 a">4</div>
<div class="col-md-1 a">5</div>
<div class="col-md-1 a">6</div>
<div class="col-md-1 a">7</div>
<div class="col-md-1 a">8</div>
<div class="col-md-1 a">9</div>
<div class="col-md-1 a">10</div>
<div class="col-md-1 a">11</div>
<div class="col-md-1 a">12</div>
</div>
</div>
//为了显示明显的 CSS
.a {
height: 100px;
background-color: #eee;
border: 1px solid #ccc;
}
//总列数都是 12,每列分配多列
<div class="container">
<div class="row">
<div class="col-md-4 a">1-4</div>
<div class="col-md-4 a">5-8</div>
<div class="col-md-4 a">9-12</div>
</div>
<div class="row">
<div class="col-md-8 a">1-8</div>
<div class="col-md-4 a">9-12</div>
</div>
</div>
//四种屏幕分类全部激活 <div class="container"> <div class="row"> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> <div class="col-lg-3 col-md-4 col-sm-6 col-xs-12 a">4</div> </div> </div> //有时我们可以设置列偏移,让中间保持空隙 <div class="container"> <div class="row"> <div class="col-md-8 a">8</div> <div class="col-md-3 col-md-offset-1 a">3</div> </div> </div> //也可以嵌套,嵌满也是 12 列 <div class="container"> <div class="row"> <div class="col-md-9 a"> <div class="col-md-8 a">1-8</div> <div class="col-md-4 a">9-12</div> </div> <div class="col-md-3 a"> 11-12 </div> </div> </div> //可以把两个列交换位置,push 向左移动,pull 向右移动 <div class="container"> <div class="row"> <div class="col-md-9 col-md-push-3 a">9</div> <div class="col-md-3 col-md-pull-9 a">3</div> </div> </div>
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