re-pasting code – sorry about that!
while (have_posts() ) : the_post(); ?>
<div class="col-md-4 col-sm-4">
<div class="social">
<a href="<?php the_field('inst');?>"><img src="<?php bloginfo('template_directory') ?>/img/inst.png" alt=""></a>
<a href="<?php the_field('fb');?>"><img src="<?php bloginfo('template_directory') ?>/img/fac.png" alt=""></a>
</div>
</div>