Bootstrap学习

1.Bootstrap CDN推荐

<!-- 新 Bootstrap 核心 CSS 文件 -->
<link href="http://apps.bdimg.com/libs/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet">

<!-- 可选的Bootstrap主题文件（一般不使用） -->
<script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/css/bootstrap-theme.min.css"></script>

<!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
<script src="http://apps.bdimg.com/libs/jquery/2.0.0/jquery.min.js"></script>

<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
<script src="http://apps.bdimg.com/libs/bootstrap/3.3.0/js/bootstrap.min.js"></script>

2.移动设备优先

Bootstrap 3 的设计目标是移动设备优先，然后才是桌面设备。这实际上是一个非常及时的转变，因为现在越来越多的用户使用移动设备。

为了让 Bootstrap 开发的网站对移动设备友好，确保适当的绘制和触屏缩放，需要在网页的 head 之中添加 viewport meta 标签，如下所示：

<meta name="viewport" content="width=device-width, initial-scale=1.0">

3.基本的全局显示

<span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">body </span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">{</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">
  font</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">-</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">family</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">:</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);"> </span><span class="str" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 136, 0);">"Helvetica Neue"</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">,</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);"> </span><span class="typ" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 0, 102);">Helvetica</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">,</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);"> </span><span class="typ" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 0, 102);">Arial</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">,</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);"> sans</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">-</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">serif</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">;</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">
  font</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">-</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">size</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">:</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);"> </span><span class="lit" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 102, 102);">14px</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">;</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">
  line</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">-</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">height</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">:</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);"> </span><span class="lit" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 102, 102);">1.428571429</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">;</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">
  color</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">:</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);"> </span><span class="com" style="border: 0px; margin: 0px; padding: 0px; color: rgb(136, 0, 0);">#333333;</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">
  background</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">-</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);">color</span><span class="pun" style="border: 0px; margin: 0px; padding: 0px; color: rgb(102, 102, 0);">:</span><span class="pln" style="border: 0px; margin: 0px; padding: 0px; color: rgb(0, 0, 0);"> </span><span class="com" style="border: 0px; margin: 0px; padding: 0px; color: rgb(136, 0, 0);">#ffffff;</span>

<span class="pln" style="border: 0px; border-image-source: initial; border-image-slice: initial; border-image-width: initial; border-image-outset: initial; border-image-repeat: initial; margin: 0px; padding: 0px;">margin:0px;
</span><span class="pun" style="color: rgb(102, 102, 0); border: 0px; border-image-source: initial; border-image-slice: initial; border-image-width: initial; border-image-outset: initial; border-image-repeat: initial; margin: 0px; padding: 0px;">}</span>