fix: fix styling and change img to NEXT Image components

[DepartureLV]

Description

Fix the marker that appears on top of the Poidex dialog window. Now, when users open the poidex, it should stay behind the window.

Card Link

https://3.basecamp.com/5802516/buckets/37608217/card_tables/cards/7473220985

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• [x] Manual Test

Checklist before requesting a review

• [x] I have performed a self-review of my code