This prompt can generate a modern beautiful wallpaper based on any Keyword. The only limit is your imagination. Write the prompt and insert your preferred Keyword so Midjourney can use its imagination to give your desired result.

Dark blue background, Complex light trajectories, Manifest the AI era, Luminous, Glowing lines, Particles, sparkle, ray tracing, speed lines, vignetting, panorama, UHD --ar 3:4 --stylize 750