BootStrap3学习笔记(一)之网格系统

如果显示网格，代码应类似这样：

<div class="container">
<div class="row">
<div class="col-md-4"><p>Box 1</p></div>
<div class="col-md-4"><p>Box 2</p></div>
<div class="col-md-4"><p>Box 3</p></div>
<div class="col-md-4"><p>Box 4</p></div>
<div class="col-md-4"><p>Box 5</p></div>
<div class="col-md-4"><p>Box 6</p></div>
<div class="col-md-4"><p>Box 7</p></div>
<div class="col-md-4"><p>Box 8</p></div>
<div class="col-md-4"><p>Box 9</p></div>
<div class="col-md-4"><p>Box 10</p></div>
<div class="col-md-4"><p>Box 11</p></div>
<div class="col-md-4"><p>Box 12</p></div>
</div>
</div>

其中col-*-*表示不同类型设备下在网格系统中占据的列宽

当列的高度不同时，由于float的作用会破坏网格的结构，可通过使用响应类避免，下面是一个完整的网格代码：

<div class="container">
<div class="row">
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 1</p></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 2</p></div>
<div class="clearfix visible-sm-block"></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 3</p></div>
<div class="clearfix visible-md-block"></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 4</p></div>
<div class="clearfix visible-sm-block"></div>
<div class="clearfix visible-lg-block"></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 5</p></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 6</p></div>
<div class="clearfix visible-sm-block"></div>
<div class="clearfix visible-md-block"></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 7</p></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 8</p></div>
<div class="clearfix visible-sm-block"></div>
<div class="clearfix visible-lg-block"></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 9</p></div>
<div class="clearfix visible-md-block"></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 10</p></div>
<div class="clearfix visible-sm-block"></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 11</p></div>
<div class="col-sm-6 col-md-4 col-lg-3"><p>Box 12</p></div>
</div>
</div>

其中的visible-*-*表示在何种设备下以何种display属性显示，由于极小设备默认为单列显示，因此无需使用响应类定制。
响应类也可用在普通标记中，比如下面的代码：

<p class="visible-xs-block">This paragraph is visible only on extra small devices.</p>
<p class="visible-sm-block">This paragraph is visible only on small devices.</p>
<p class="visible-md-block">This paragraph is visible only on medium devices.</p>
<p class="visible-lg-block">This paragraph is visible only on large devices.</p>

类似的，也可使用hidden-*，设置在特定设备中隐藏：

<p class="hidden-xs">This paragraph is hidden only on extra small devices.</p>
<p class="hidden-sm">This paragraph is hidden only on small devices.</p>
<p class="hidden-md">This paragraph is hidden only on medium devices.</p>
<p class="hidden-lg">This paragraph is hidden only on large devices.</p>

通过响应类还可以设置打印时的格式：

以上所述是小编给大家介绍的BootStrap3学习笔记(一)之网格系统网站的支持！