Wix Site Audit & Tweaks

I built my site on Wix and now need a fresh pair of expert eyes to confirm everything works and looks right across desktop and mobile. The brief is simple: no new content, just a full review and the adjustments required to polish what already exists... (Budget: £20 - £250 GBP, Jobs: CSS, HTML, JavaScript, PHP, Web Design, Web Development, Website Optimization, Wix)