Navigation Bar Trouble

Hey, I’m currently working on a navigationbar, and whenever I add a submenu this grey + – box appear. I’m using Elementor Pro, is there anyone who knows how to remove it?

https://preview.redd.it/0wpbh0r666p91.png?width=2880&format=png&auto=webp&s=e839ed96d090a4e10e601f98e32bc2bed7a91052

 

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