wp_kses_allowed_html iframe, style script

function custom_wpkses_post_tags( $tags, $context ) {

	if ( 'post' === $context ) {
  $tags['iframe'] = array(
			'src'             => true,
			'height'          => true,
			'width'           => true,
			'frameborder'     => true,
			'allowfullscreen' => true,
		);
    
		$tags['script'] = array(
			'id'             => true,
			'class'          => true,
			'src'           => true,
		);
		$tags['style'] = array(
			'id'             => true,
			'class'          => true,
			'src'           => true,
		);


	}

	return $tags;
}

add_filter( 'wp_kses_allowed_html', 'custom_wpkses_post_tags', 10, 2 );