Bootstrap导航栏头部错位问题

代码：

 <section class="header">
     <div class="container">
         <div class="row">
             <div class="col-sm-12">
                 <div class="navbar navbar-default" role="navigation">
                     <div class="navbar-header">
                         <button class="navbar-toggle" type="button" data-toggle="collapse" data-target="#navbar-responsive-collapse">
                             <span class="sr-only">Toggle Navigation</span>
                             <span class="icon-bar"></span>
                             <span class="icon-bar"></span>
                             <span class="icon-bar"></span>
                         </button>
                         <a href="javascript:void(0);" class="navbar-brand"><span class="glyphicon glyphicon-bold"></span><span class="glyphicon glyphicon-font"></span></a>
                   　</div>
                     <div class="collapse navbar-collapse" id="navbar-responsive-collapse">
                         <ul class="nav navbar-nav">
                             <li class=""><a href="javascript:void(0);">首页</a></li>
                             <li class="dropdown active">
                                 <a href="javascript:void(0);" data-toggle="dropdown" class="dropdown-toggle">备案主表<span class="caret"></span></a>
                                 <ul class="dropdown-menu">
                                     <li class=""><a href="javascript:void(0);" onclick="loadInfo('main','',0,1);">所有数据</a></li>
                                     <li class="divider"></li>
                                     <li><a href="javascript:void(0);" onclick="loadInfo('main',0,0,1);">待更新（status-0）</a></li>
                                     <li class="divider"></li>
                                     <li><a href="javascript:void(0);" onclick="loadInfo('main',1,0,1);">审核通过（status-1）</a></li>
                                     <li class="divider"></li>
                                     <li><a href="javascript:void(0);" onclick="loadInfo('main',2,0,1);">数据异常（status-2）</a></li>
                                     <li class="divider"></li>
                                     <li><a href="javascript:void(0);" onclick="loadInfo('main',4,0,1);">不存在（status-4）</a></li>
                                     <li class="divider"></li>
                                     <li class="disabled"><a href="javascript:void(0);" onclick="loadInfo('main',3,0,1);">已删除（status-3）</a></li>
                                 </ul>
                             </li>
                             <li><a href="javascript:void(0);">短信详情</a></li>
                             <li><a href="javascript:void(0);">文档</a></li>
                             <li><a href="javascript:void(0);">日志</a></li>
                         </ul>
                         <form action="##" class="navbar-form navbar-left" rol="search">
                             <div class="form-group">
                                <input type="text" class="form-control" placeholder="请输入关键词" />
                             </div>
                             <button type="submit" class="btn btn-default">搜索</button>
                         </form>
                     </div>
                 </div>
             </div>
         </div>
     </div>
 </section>

导致间距不同的不是什么代码问题，而是空格问题。原代码<div class="navbar navbar-default" role="navigation">的后面，<div class="navbar-header">前面有2个空格，删掉后错位就消失了。看来还得使用Tab而不是空格来缩进。