Mobile Layout & Feature Fix

My current site looks fine on desktop, but the mobile version—packaged inside a six-site app—cuts off several hero and gallery images. I need the layout for mobile screens and, while we’re at it, tighten up a few pieces of front-end functionality that have been acting up... (Budget: $30 - $250 AUD, Jobs: CSS, Frontend Development, HTML, HTML5, iOS Development, JavaScript, UI / User Interface, Web Design)