eBay listing code error - display issues on tablets and phones

I need an expert in eBay listing design and functionality especially in displaying perfectly on all devices tablets and mobiles included. I have an existing eBay store page, the listing page has recently been designed however the ‘search function’ design (not eBay’s default design but a simple one we created with text box and magnifying glass image next to it) is not displaying correctly on phones and tablets (it pushes the magnifying glass image onto a new line in a different position) and pushes the social media buttons out of place too. The images are not locking into place. Important information: I use m2e integration (so magento pushes to eBay) so I will be able to give you the listing template code for one product so you can see the issues on all devices and then I need that code modified so I can input back into magento for that product so it will display correctly on eBay on all devices. So final outcome is that the design and search function will work in the position I want on ALL devices, PCs, laptops, tablets, phones (android and apple) etc. This should be a very simple and quick job for someone who knows what they are doing as it will just be tweaking of the code. Full details of my eBay store and listing code will be given in a private message after I've reviewed your previous work history and portfolio. Please reply with: Links to your Portfolio (similar projects as to this) and an ETA on when this could be completed (im needing this done ASAP) Important: Please start your reply with the code word 'HAPPY' so that I know you took the time to read the complete posting instead of just replying to all new submissions as some people do. Thank you