mobile menu trigger

Good morning, this is my first website and i am a complet beginner.

When i open the site on a mobile. I see the trigger in the right corner on the home page. When i click on it, the trigger icons is displayed again and when i click on that trigger icon my menu opens. How can i fix that the menu fully opens when i click on the first trigger.

Thanks

The page I need help with: [log in to see the link]