Y2K is a visual style inspired by ideas about the future around the turn of the year 2000. It often uses shiny surfaces, rounded digital-looking shapes, bright colors, and playful technology imagery.
Imagine an old computer imagined as a friendly object from tomorrow: smooth, glossy, and a little unusual. Designers sometimes bring this look into a website to create a nostalgic or futuristic mood.
“Y2K” covers many different looks, so it is not one strict set of design rules. Use the parts that support the product rather than adding effects just because they look retro.