CSS problem

Hi i use the plugin but with BLDR template there is a problem if i use the <?php do_action(‘show_bnt’); ?> code on the header.php ( https://leadergroupe.votrepha.odns.fr/wp/services-leadersante/ ). When i scroll the plugin is fine, but on a page i have all the breaking news…
https://leadergroupe.votrepha.odns.fr/wp/

https://www.ads-software.com/plugins/breaking-news-ticker/