<?php
function get_spec_posts_func( $atts ){
	$query = new WP_Query( array( 'category_name' => $the_category ) );
	if ( $query->have_posts() ) {
		echo "<h1>Our projects</h1>";
	echo '<div class="grid-x">';
	while ( $query->have_posts() ) {
		$query->the_post();
        $imgurl = get_the_post_thumbnail_url($post ,'medium_large'); ?>

		<div class="cell small-12 medium-12 large-4 projektrad" style="background-image:url(<?php echo $imgurl;?>); background-size:cover;">
        <h3 class="projekttitel"><a href="<?php echo get_the_permalink(); ?>"> <?php echo get_the_title() . '</a></h3>' . '</div>';

	}
	echo '</div>';
	/* Restore original Post Data */
	wp_reset_postdata();
} else {
	// no posts found
}
}
add_shortcode( 'get_my_posts', 'get_spec_posts_func' );
?>