Thumbnail en (uitgelichte) afbeelding

echo "<figure class='contour of-cv'><img loading='lazy' src='";
the_post_thumbnail_url( 'bericht' );
echo "' data-caption='";
the_title();
echo "' alt='";
the_title();
echo "' /></figure>";

$duimnagel = get_the_post_thumbnail_url( $content->ID, 'blokken' );

the_post_thumbnail_url( 'blokken' ); //url
rmwrk_post_thumbnail();

if ( has_post_thumbnail() )

<img loading='lazy' alt='' src='' />