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Need Help With Nav bar on Phone & Tablet

I need help with my nav bar. It looks fine on desktop but when I look at it on a phone or tablet, the page names are still there along with the hamburger. How do I get just the hamburger to show up on the tablet and phone sites?

https://preview.webflow.com/preview/d-coax?utm_medium=preview_link&utm_source=designer&utm_content=d-coax&preview=f32c0a192bca743a4b2b9bf9b2c7c72d&pageId=5c5387e3be4b272529b7eec3&mode=preview

Thanks so much

Annette