我一直在使用 Twitter Bootstrap 开发一个迷你项目。我正在使用 's 并且有一些奇怪的行为。我有 jQuery，它允许我在单击按钮时创建新选项卡。新选项卡被激活并包含一个表单。这个表格取代了下面的标题，我不知道为什么。任何人都可以帮忙吗？
代码片段：
<section id="builder">
<div class="page-header">
<h1>App Builder. <small>Create your app.</small></h1>
</div>
<div class="span7">
<!-- ===== App Title ===== -->
<div class="control-group">
<label class="control-label" for="appTitle">App Title</label>
<div class="controls">
<input type="text" class="input-xlarge" id="appTitle">
<p class="help-block">Enter the title for your app. It will appear at the top of your app.</p>
</div>
</div>
<!-- ===== App Subtitle ===== -->
<div class="control-group">
<label class="control-label" for="appSubtitle">App Subtitle</label>
<div class="controls">
<input type="text" class="input-xlarge" id="appSubtitle">
<p class="help-block">Enter the subtitle for your app. It will appear below the title.</p>
</div>
</div>
<!-- ===== App Theme ===== -->
<div class="control-group">
<label class="control-label" for="appTheme">App Theme</label>
<div class="controls">
<select id="appTheme">
<option>Dark</option>
<option>Light</option>
</select>
<p class="help-block">Select the theme for your app. You can preview your theme on the right.</p>
</div>
</div>
<!-- ===== App Pages ===== -->
<p>App Pages</p>
<ul class="nav nav-tabs" id="tabHeaders">
<li><a href="javascript:void(0);" id="createTab"><i class="icon-plus"></i>Add Page</a></li>
<!-- Tabs (Created by Javascript) -->
</ul>
<div class="tab-content" id="tabContent">
<!-- Tab Content (Created by Javascript) -->
</div>
</div>
<div class="span4">
<div class="iphonebackground">
<div class="screenbackground"></div>
</div>
</div>
</section>
<section id="preview">
<div class="page-header">
<h1>Preview your App. <small>See your app in it's full glory before you download it.</small></h1>
</div>
</section>
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