I am using this
<?php// Load the theme stylesheets
function theme_styles() {
// Load all of the styles that need to appear on all pages
wp_enqueue_style( 'main_css', get_template_directory_uri() . '/style.css' );
}
add_action('wp_enqueue_scripts', 'theme_styles');
?>
to add a stylesheet in my theme, but it's not loading the stylesheet