divart_custom_styles

// Register Style
function divart_custom_styles() {

	wp_deregister_style( 'bootstrap' );
	wp_register_style( 'bootstrap', '//maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css', false, '3.3.6' );
	wp_enqueue_style( 'bootstrap' );

}
add_action( 'wp_enqueue_scripts', 'divart_custom_styles' );