Hey, sorry for the late reply. I can only find one way of doing this at the moment but I will keep trying for a more sensible option.
Open page.php and find the following code:
<div class="post-wrap rounds single">
<div class="post rounds">
<?php comments_template(); ?>
</div>
</div>
Simply delete that, and the CSS will be removed too, as well as the comment area.
If you’d like to do it for posts as well, open up single.php and remove the following:
<div class="post-wrap rounds single">
<div class="post rounds">
<?php comments_template('', true); ?>
</div>
</div>
Again, I will stress it’s not best practice to be editing theme files directly so I will work on providing an alternative in the meantime. If you haven’t already, create a child theme; then, when your theme gets updated you won’t lose any edits.
Be sure to make a backup of your theme before editing, just in case something goes wrong.