Editing search bar for mobile only (supply theme)

[spareshut]

Hi, I need a bit of assistance editing my homepage search bar for mobile only. I have positioned it just how I want for the desktop version but whenever I go to edit for the mobile it changes desktop as well. Any way to change the position for mobile only? ill leave images below.

This is what I would like to keep the same.

This is where id like to change the search to on mobile

hopefully someone can help?

thanks

[AlexEffron]

Please provide website url and if your store is password protected then also provide password