Add some classes to assist with layout styling.

themes/bootstrap3/templates/header.phtml

 <? $account = $this->auth()->getManager(); ?>
-<div class="container navbar">
+<div class="banner container navbar">
   <div class="navbar-header">
     <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#header-collapse">
       <span class="sr-only">Toggle navigation</span>

themes/bootstrap3/templates/layout/layout.phtml

@@ -138,7 +138,7 @@ JS;
       <? endif; ?>
       <a class="sr-only" href="#content"><?=$this->transEsc('Skip to content') ?></a>
       <?=$this->render('header.phtml')?>
-      <div class="container">
+      <div class="breadcrumbs container">
         <? if((!isset($this->layout()->showBreadcrumbs) || $this->layout()->showBreadcrumbs == true)
           && !empty($this->layout()->breadcrumbs)
           && $this->layout()->breadcrumbs !== false