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Can not close the FAQ question button

Hi, this is Jerome from China, A webflow starter, I can not figure out how to close this FAQ question button on homepage, can somebody help?

https://preview.webflow.com/preview/brice0-paul1?utm_medium=preview_link&utm_source=designer&utm_content=brice0-paul1&preview=0ff5f9f99507c67f6f5ea7c6843a3b22&workflow=preview