Personal Photo Gallery Webpage

I’m putting together a single-page site that serves one purpose: showcase my photographs in a clean, grid-style gallery. The page should load quickly, adapt gracefully to mobile and desktop screens, and let me drop new images into a folder (or a simple CMS section) without touching code each time... (Budget: ₹100 - ₹400 INR, Jobs: CSS, Frontend Development, HTML, JavaScript, User Interface / IA, Web Design, Web Development, Website Design)