Flex display horizontal doesnt work

Design help General
1

within the menu bar on phone view im trying to add a magnifying glass that sits beside the menu button, but whatever value i change for menu button within flex it wants to sit on top.

https://preview.webflow.com/preview/hogarths-groovy-site?utm_medium=preview_link&utm_source=designer&utm_content=hogarths-groovy-site&preview=d83c7e239de9e81414bf09dd21877df7&workflow=preview

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