How do I implement a fantasy / game-like UI (ornamental, glowing, RPG-style) in web development?

Hey everyone,
I already know how to design fantasy-style UI elements in Photoshop (ornamental frames, glowing buttons, jewel decorations, etc.), but I’m struggling with the next step: **how to implement these kinds of “game-like UIs” in web development (HTML, CSS, JS)**.

I’m not talking about normal flat login forms or simple modern UI (that part I can do).
What I want is something closer to RPG/fantasy game UIs you see in games—ornate frames, glowing buttons, jewel effects, maybe even particle animations in the background.

Questions:

* How do you usually translate Photoshop fantasy UI assets (frames, ornaments, buttons) into usable HTML/CSS structures?
* Are there specific web techniques, libraries, or workflows people use to achieve **that immersive, fantasy/game feel**?
* Any good examples, tutorials, or open-source projects that show how to build RPG-like UI for the web?