display only sticky post on front page

Hi,

I would like to display only sticky posts from one category on home page. Could you help me with this?

My code on homepage:
“<? $args1 = array( ‘cat’ => 6, ‘posts_per_page’ => 1 ); ?>
<?php $glowna_akt = new WP_Query($args1); ?>
<? while ($glowna_akt->have_posts()) : $glowna_akt->the_post(); ?>

<article>
<h1>
<?php the_title(); ?>
</h1>

<br style=”clear:both” />

<? if ( has_post_thumbnail()) { ?>
<figure><?php the_post_thumbnail( array(250,250) ); ?></figure>
<? } ?>

<?php echo the_content(); ?>

<p style=”float:right;”>“> więcej </p>

</article>

<?php endwhile; ?>

<br style=”clear:both” />”

https://wordpress.org/plugins/category-sticky-post/