child-theme style not changing on localhost

Try this:

function enqueue_child_theme_styles() {
    wp_enqueue_style( 'parent-style', get_template_directory_uri() . '/style.css' );
    wp_enqueue_style( 'child-style', get_stylesheet_uri() . '?v=' . filemtime( get_stylesheet_directory() . '/style.css' ) );
}