text: <nav class="navbar navbar-default">
      <div class="container-fluid center-block result-header">
          <div class="navbar-header">
              <a class="navbar-brand" href="/">
                  <img alt="Owllook" width="120px" height="40px" src="static/novels/img/logo_search.png">
              </a>
          </div>
          <form action="/search" method="get">
              <div class="col-sm-6 col-xs-9 search">
                  <input type="text" name="wd" class="form-control" placeholder="请输入小说名" value="{{name}}">
              </div>
          </form>
          {% if is_login %}
          <div class="header">
              {% include "login.html" %}
          </div>
          {% else %}
          <div class="login">
              <a class="btn btn-primary pull-right" href="#" role="button" data-toggle="modal" data-target="#login">登录</a>
          </div>
          {% endif %}
      </div>
  </nav>