I am customizing a WP theme by making a child theme. I am placing a navbar from Bootstrap into the header.php file in the child theme directory. However, I'm not sure where to place the navbar code. I can place it both before and after the <body> tag successfully (as in, the navbar shows up just fine no matter which one I pick), but I'd like to phone an experienced friend here and ask which is the better practice.
Original, unmodified header.php code
<!DOCTYPE html>
<html <?php language_attributes(); ?>>
<head>
<meta charset="<?php bloginfo( 'charset' ); ?>" />
<meta name="viewport" content="width=device-width" />
<title><?php wp_title( ' | ', true, 'right' ); ?></title>
<link rel="stylesheet" type="text/css" href="<?php echo get_stylesheet_uri(); ?>" />
<?php wp_head(); ?>
</head>
<body <?php body_class(); ?> >
<div id="wrapper" class="hfeed">
<header id="header" role="banner">
<section id="branding">
<div id="site-title"><?php if ( ! is_singular() ) { echo '<h1>'; } ?><a href="<?php echo esc_url( home_url( '/' ) ); ?>" title="<?php esc_attr_e( get_bloginfo( 'name' ), 'blankslate' ); ?>" rel="home"><?php echo esc_html( get_bloginfo( 'name' ) ); ?></a><?php if ( ! is_singular() ) { echo '</h1>'; } ?></div>
<div id="site-description"><?php bloginfo( 'description' ); ?></div>
</section>
<nav id="menu" role="navigation">
<div id="search">
<?php get_search_form(); ?>
</div>
<?php wp_nav_menu( array( 'theme_location' => 'main-menu' ) ); ?>
</nav>
</header>
<div id="container">
My navbar code will replace the <nav> section in the above code, like so
<!DOCTYPE html>
<html <?php language_attributes(); ?>>
<head>
<meta charset="<?php bloginfo( 'charset' ); ?>" />
<meta name="viewport" content="width=device-width, initial scale=1" />
<title><?php wp_title( ' | ', true, 'right' ); ?></title>
<link rel="stylesheet" type="text/css" href="<?php echo get_stylesheet_uri(); ?>" />
<?php wp_head(); ?>
</head>
<nav class="navbar navbar-default">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
<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="<?php echo esc_url( home_url( '/' ) ); ?>">MoonLighting</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 navbar-right">
<li><a href="pages/adultanswers.php">Side Job</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">My Account <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Settings</a></li>
<li><a href="#">Add Funds</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Sign Out</a></li>
</ul>
</li>
</ul>
</div>
</div><!-- /.container-fluid -->
</nav>
<body <?php body_class(); ?>>
<div id="wrapper" class="hfeed">
<header id="header" role="banner">
<section id="branding">
<!--I removed this for reasons unrelated-->
</section>
