模態框閃退到你還看不到模態框的內容呢，就屏幕灰了一下就是

代碼如下

<!--搜索注冊條--> <div class="container-fluid">  <form class="navbar-form navbar-center" role="Search">    <div class="form-group text-center col-sm-4">      <input type="text" class="form-control" placeholder="Search">      <span class="input-group-addon">搜索</span>    </div>    <div class="container">       <button type="submit" class="btn-info">登錄</button>       <button type="button" class="btn-danger">注銷</button>       <button class="btn btn-primary btn-lg" data-toggle="modal" data-target="#myModal" >注冊</button>      <!--注冊的模態框-->       <div class="modal fade" id="myModal">        <div class="modal-dialog">          <div class="modal-content">            <div class="modal-header">             <button type="button" class="close" data-dismiss="modal">×</button>             <h4 class="modal-title">注冊</h4>            </div>            <div class="modal-body">             <div class="container">               <div class="input-group">                <label>手機號</label>                <input type="text" class="form-control" placeholder="請輸入您的手機號" />               </div>               <div class="input-group">                <label>姓名</label>                <input type="text" class="form-control" placeholder="請輸入您的姓名" />               </div>               <div class="input-group">                <label>郵箱</label>                <input class="text" class="form-control" placeholder="請輸入您的郵箱" />                <span class="input-group-addon">@qq.com</span>               </div>               <div class="input-group">                <label>性別</label>                <label class="radio-inline"><input class="radio" />男     </label>                <label class="radio-inline"><input class="radio" />女     </label>               </div>               <div class="input-group">                <div class="progress">                <div class="progress-bar" style="width: 50px;">               <span class="sr-only">注冊信息提交中......</span>              </div>            </div>           </div><!--body部分-->        <div class="modal-footer">         <button class="btn btn-primary">提交</button>         <button class="btn btn-default" data-dismiss="modal">關閉</button>        </div>         </div>        </div>      </div>      <!--注冊的模態框-->      </div>   </form>  <!--搜索注冊條--> </div>