Simple HTML Site with Media

I need a straightforward, purely HTML website that people can browse quickly without distractions. The layout should stay simple and useful—no heavy frameworks, just clean, well-commented HTML, CSS and a touch of vanilla JavaScript where it makes sense.

What has to be there:
• An image gallery that looks good on both desktop and mobile.

Please keep the overall design light, uncluttered and fully responsive. I’ll provide the copy, images and video links; you handle the markup, styling and basic responsiveness checks across modern browsers. Deliver the finished site as a neatly organised ZIP so I can drop it straight onto my host.