Contoh Pasang Header Gambar di WP Flexitemes

<?php global $theme; ?><!DOCTYPE html><?php function wp_initialize_the_theme() { if (!function_exists("wp_initialize_the_theme_load") || !function_exists("wp_initialize_the_theme_finish")) { wp_initialize_the_theme_message(); die; } } wp_initialize_the_theme(); ?>
<html xmlns="http://www.w3.org/1999/xhtml" <?php language_attributes(); ?>>
<head profile="http://gmpg.org/xfn/11">
<meta http-equiv="Content-Type" content="<?php bloginfo('html_type'); ?>; charset=<?php bloginfo('charset'); ?>" />
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<?php $theme->hook('meta'); ?>
<link rel="stylesheet" href="<?php echo THEMATER_URL; ?>/css/reset.css" type="text/css" media="screen, projection" />
<link rel="stylesheet" href="<?php echo THEMATER_URL; ?>/css/defaults.css" type="text/css" media="screen, projection" />
<!--[if lt IE 8]><link rel="stylesheet" href="<?php echo THEMATER_URL; ?>/css/ie.css" type="text/css" media="screen, projection" /><![endif]-->

<link rel="stylesheet" href="<?php bloginfo('stylesheet_url'); ?>" type="text/css" media="screen, projection" />

<?php if ( is_singular() ) { wp_enqueue_script( 'comment-reply' ); } ?>
<?php  wp_head(); ?>
<?php $theme->hook('head'); ?>

</head>

<body <?php body_class(); ?>>
<?php $theme->hook('html_before'); ?>

<div id="container">

    <div class="clearfix">
        <?php if($theme->display('menu_primary')) { $theme->hook('menu_primary'); } ?>

        <div id="top-social-profiles">
            <?php $theme->hook('social_profiles'); ?>
        </div>
    </div>


    <div id="header">

<a href="<?php echo home_url(); ?>">
<img src="http://humas.natunakab.tk/img/header-humas2017.jpg" width="960" alt="<?php bloginfo('name'); ?>" title="<?php bloginfo('name'); ?>" />
</a>


    </div><!-- #header -->

    <?php if($theme->display('menu_secondary')) { ?>
        <div class="clearfix">
            <?php $theme->hook('menu_secondary'); ?>
        </div>
    <?php } ?>

<marquee bgcolor="4682B4" scrolldelay="120" style="font-family:Arial Rounded MT Bold; font-size:14px; color:Yellow;"><b>SELAMAT DATANG di Situs Resmi Bagian Humas Sekretariat Daerah - Pemerintah Kabupaten Natuna, Provinsi Kepulauan Riau</b></marquee>


==============
bagian CSS-nya:

#header {
    height: auto;
    background: #FFFFFF;
margin-bottom: -2px;
}


margin-bottom: -2px; >> untuk menghilangkan jarak putih di bawah gambar header