header.php

<?php
/**
 * The masthead for our theme
 *
 * This is the template that displays all of the <head> section and everything up until <div id="content">
 *
 * @link https://developer.wordpress.org/themes/basics/template-files/#template-partials
 *
 * @package starbase
 */

?><!DOCTYPE html>
<html <?php language_attributes(); ?>>
<head>
<meta charset="<?php bloginfo( 'charset' ); ?>">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="profile" href="http://gmpg.org/xfn/11">

<?php wp_head(); ?>
</head>

<body <?php body_class(); ?>>
<div id="page" class="site">
    <header id="masthead">
        <img src="<?php _e(get_template_directory_uri()); ?>/images/starbase.png" alt="starbase" />
        <h1><a href="<?php echo esc_url( home_url( '/' ) ); ?>" rel="home"><?php bloginfo( 'name' ); ?></a></h1>
        <?php
        $description = get_bloginfo( 'description', 'display' );
        if ( $description || is_customize_preview() ) : ?>
            <p class="site-description"><?php echo $description; /* WPCS: xss ok. */ ?></p>
            <?php
        endif; ?>

        <nav class="navigation" role="navigation">
            <?php wp_nav_menu( array( 'theme_location' => 'menu-1', 'menu_id' => 'primary-menu' ) ); ?>
        </nav><!-- #site-navigation -->

        <p><button type="button" class="button">hit me!</button></p>
    </header>

	<div id="content" class="site-content">