The PortfolioGallery component creates an engaging visual showcase of portfolio items with a 3D overlapping layout on desktop and a smooth horizontal marquee on mobile devices. It features interactive hover effects that elevate selected images while lowering others, creating depth and focus, along with customizable styling options for maximum adaptability. This component is ideal for creative professionals and agencies to display their work collections, allowing users to browse through projects with an immersive, cinematic experience that enhances visual storytelling and portfolio presentation.