我在尝试解决此问题时遇到问题.文档说我应该将跨度设置为等于父跨度,但是,当我这样做时,它会延伸到井容器的右侧.在移动设备上查看它看起来很好(向右延伸适当的数量,填充井),然而,它在桌面上不能很好地运行(我希望字段在井内延伸).
<div class="container">
<div class="row">
<div class="span4 offset4">
<div id="login-panel">
<div class="well bordered clearfix">
<div class="text-center">
<div class="page-header" style="border-bottom: none; margin: 0;">
<img src="library/img/logo-01.png"/>
</div>
</div>
<form method="POST" action="#" accept-charset="UTF-8" class="pull-left">
<legend>App name</legend>
<div class="control-group ">
<!-- username field -->
<div class="controls">
<label>Email</label>
<input class="span4" type="text" name="email" value="" id="email" placeholder="Your email address">
</div>
</div>
<div class="control-group">
<label>Password</label>
<!-- password field -->
<input type="password" name="password" id="password" placeholder="Password">
</div>
<div class="control-group ">
<p>
<input class="btn btn-default pull-left" type="submit" value="Sign-up">
<input class="btn btn-primary pull-right" type="submit" value="Login">
</p>
</div>
</form>
</div>
</div>
</div>
</div> <!-- end row -->
</div> <!-- end container -->
