Basic Portfolio Web Page

I’d like a straightforward, single-page portfolio built with clean HTML and CSS. The page only needs one main section—Projects—where I can showcase screenshots, short descriptions, and links. A simple, modern layout that looks good on both desktop and mobile screens is perfect; no heavy frameworks are necessary, but feel free to use lightweight libraries if they speed things up.

Here’s what I need delivered:
• Fully commented HTML and CSS files so I can update them later.
• A responsive grid or card layout for the project items.
• Placeholder images and text I can swap out easily.
• Brief instructions on where to edit content and styles.

Please keep the code organized and easy to follow, as I’m still learning and want to study how you structure everything.