Separate First Post Loop

Try like this which fill skip first post:

$i = 0;
while ( have_posts() ) :
    the_post();
    if($i > 0)
        get_template_part( 'template-parts/content-home', get_post_type() );
    else {
        // design your first post as you wish with HTML, CSS
        the_title();
        the_permalink();
        the_post_thumbnail();   
        the_content();
        the_author();
        the_date();
    }           
    $i++;
endwhile;