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/**
 * Registers a widget area.
 *
 * @link https://developer.wordpress.org/reference/functions/register_sidebar/
 *
 */
function child_theme_widgets()
{
    register_sidebar(array(
        'name' => __('Header', 'twentysixteen'),
        'id' => 'header-1',
        'description' => '',
        'class' => '',
        'before_widget' => '',
        'after_widget' => '',
        'before_title' => '',
        'after_title' => '',
    ));
}

add_action('widgets_init', 'child_theme_widgets');