Help with a quick fix on mobile menu

I have a website which also has a mobile menu. When the mobile menu kicks in the main navigation is hidden. I want to add something to the mobile sticky header (a logo). Currently when the screen adjusts to mobile view, there is nothing on the white sticky header except for the mobile menu button. I want to add a logo and some text to this white mobile sticky header. This sticky header only shows in mobile view. The sticky header that shows on the desktop already has a logo and text on it. The sticky header is already in place. I have located the code that displays the mobile menu, but can't figure out how to add a logo to the sticky header. I will pay $10 - $15 for this job. So please make your bid for this amount. I need someone to talk to me while I share my screen and show me where to add the correct HTML to add a logo to the mobile sticky header... Please add "css" as the first word in your application, so I know you read this. Thanks