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。