Vc addon not displaying properly as adde - wordpress

Question

I have made the visual composer addon to meet one of the requirement. However I have found that it always come above the other vc elements.
I have tried to add the class as per vc composer other elements
public function sim_product($attr)
{
?>
<div class="vc_column-inner"><div class="wpb_wrapper">
<div class="wpb_text_column wpb_content_element ">
<div class="wpb_wrapper">
<div class="more-project-list">
<?php
$select = $attr['sim_product_id'];
$query = new WP_Query( array( 'post_type' => 'products','post__in' => explode(",",$select) ));
if ( $query->have_posts() ) { ?>
<?php while ( $query->have_posts() )
{ $query->the_post(); ?>
<div class="single-blk" style='background-color: <?php echo the_field('colour');?>'>
<div class="title">
<?php the_title();?>
</div>
<figure>
<?php if (has_post_thumbnail( $query->ID ) )
{
$image = wp_get_attachment_image_src( get_post_thumbnail_id( $query->ID ), 'single-post-thumbnail' ); ?>
<img src="<?php echo $image[0]; ?>" alt="">
<?php }?>
</figure>
<div class="category">
<?php
$terms = wp_get_post_terms( $query->post->ID, array( 'Product_category') );
foreach ( $terms as $term ) { echo $term->name;}
?>
</div>
</div>
<?php }}?>
</div>
</div></div></div></div>
<?php
}
It isnt coming where I have placed it it always come on top