Looking for someone to do Visual CSS & other minor updates to our SMS platform quickly.

Description

My goal is to find someone who I can continue to work with on an ongoing basis if this job goes well. Details? I have purchased UltraSMSScript and they've installed it on our VPS at KnownHost. Before I launch this publicly, I would like to hire someone to do visual changes to the UI to make it look more modern. I know they push 'updates' to the platform on occasion so it was suggested to me that we have someone do CSS updates in a way that they would not be overwritten when functionality updates are pushed but too be honest, I don't really understand the aspects of how this all works. I'm looking for someone who is straight-forward and easy to work with. I would love to have a conversation via Zoom or Google Meet to show you the platform and get your feedback regarding what can be done, and how quickly. My goal is to launch this product the first week of October so the UI changes are what we need right away. and my hope is that we can create a clean and modern feel. I've attached screenshots of the current UI so you can see what we are working with.