容器中的Bootstrap Navbar，但下面的容器是不同的大小

Question

我创建了一个导航栏，并通过将.container添加到.navbar类来使其成为容器宽度。我在下面创建了一个新行，但它的容器宽度不如导航栏。我确定我做了些蠢事但不确定是什么

<div class="navbar navbar-default navbar-fixed-top container" role="navigation" id="topnavbar">
          <div class="container-fluid">
            <!-- Brand and toggle get grouped for better mobile display -->
            <div class="navbar-header">
              <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
              </button>
              <a class="navbar-brand" href="#"><img src="assets/newOrangelogo2.svg" width="300"></a>
            </div>

            <!-- Collect the nav links, forms, and other content for toggling -->
            <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
              <ul class="nav navbar-nav pull-right">
                <li class="active"><a href="#">Home</a></li>
                <li class="dropdown">
                  <a href="#" class="dropdown-toggle" data-toggle="dropdown">About <span class="caret"></span></a>
                  <ul class="dropdown-menu" role="menu">
                    <li><a class="sliding-u-l-r" href="#">About Me</a></li>
                    <li><a href="#">Services</a></li>
                    <li><a href="#">Process</a></li>
                    <li><a href="#">Clients</a></li>
                    <li><a href="#">Prices</a></li>


                  </ul>
                </li>
                <li><a href="#">Work</a></li>
                <li><a href="#">Contact</a></li>
                <li><a href="#">Blog</a></li>
              </ul>


            </div><!-- /.navbar-collapse -->
        </div><!-- /.container-fluid -->  
        </div>

<div class="container">
    <div class="row no-gutter">

            <div class="col-md-12 mainImage">
                Image

            </div>
        </div>
    </div>