Unable to scroll and navigate in phone format

https://preview.webflow.com/preview/digitalluresmarketing?utm_medium=preview_link&utm_source=designer&utm_content=digitalluresmarketing&preview=4f4001924c0295efb98e297e63e0bd21&workflow=preview

Hello, recently it is impossible for me to scroll or browse my site in tablet phone format etc. It only works for the size of my pc screen. Could you help me?