How to hide empty pagination button when no previous page

by 

     <nav class="pagination" role="navigation">
        <?php if( get_previous_posts_link() ) { ?>
        <div id="prv" class="button pag-btn nav-next"><?php previous_posts_link( 'Previous' ); ?></div>
        <?php } 
        if( get_next_posts_link() ) { ?>
        <div id="nxt" class="button pag-btn nav-previous"><?php next_posts_link( 'Next' ); ?></div>
        <?php } ?>
    </nav>

https://developer.wordpress.org/reference/functions/previous_posts_link/
https://developer.wordpress.org/reference/functions/get_previous_posts_link/