“wpcargo_after_reciever_meta_section_sep” is a filter hook which will allow you to add a separator after the shipper and receiver details section.
Copy and paste the following code in your current theme’s function.php
function mycustom_after_reciever_meta_sep(){ ?>
<style>
.clear-line{border-bottom:1px solid #000;}
</style>
<?php
}
add_filter('wpcargo_after_reciever_meta_section_sep', 'mycustom_after_reciever_meta_sep' );
Screenshot:
