∞ forever components

CSS 3D & Perspective

Stereographic Star Dome

150 billboard stars placed on a CSS 3D hemisphere slowly wheel about the polar axis; pointer nudges spin speed and clicking accelerates rotation.

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When to use it

Dark-mode hero backgrounds, space/astronomy themes, ambient looping screensavers requiring depth.

When not to

Light backgrounds (hardcoded near-black), low-end mobile (150 DOM nodes with 3D transforms), or layouts needing legible text overlays.

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Increase star count to 200 by changing N=150 to N=200, slow base drift to vel=0.06, and tint stars warm amber by editing the radial-gradient stop colors in .sd-bill.

Safe to edit

  • star count (N=150)
  • dome tilt angle (rotateX 58deg / TILT constant)
  • base spin velocity (vel=0.12)
  • star size range (1.4 + mag*4.2)
  • star color (radial-gradient stops in .sd-bill)

Keep intact

  • billboard counter-rotation inverse transform (rotateZ(-spin) rotateX(-58deg))
  • IIFE wrapper
  • visibilitychange pause/start
  • reduced-motion static fallback

Known limitations

  • Background color hardcoded as #05060f — must edit CSS to change
  • 150 3D-transformed DOM nodes can stress mobile GPU despite no per-star will-change
  • Pointer nudge only responds to horizontal axis (clientX); no vertical influence

3dstarsplanetariumperspectiveambientspacebillboard

More CSS 3D & Perspective components

  • Rotating CubeGlowing sage-green wireframe cube slowly auto-rotates in CSS 3D with a subtle sine-wave tilt; pointer movement offsets the rotation to follow the cursor.
  • Card Deck FanSeven gold-and-mauve playing cards fan open and closed in a sine-wave 3D arc using CSS rotateZ and perspective transform.
  • Coverflow RingEight vivid gradient cards orbit in a 3D coverflow ring with CSS perspective and per-card reflections. Pointer X position steers rotation speed.
  • Folding Paper4-panel paper accordion folds and unfolds in a zig-zag CSS 3D motion, slowly rotating on a dark green background. Cream front and sage back faces alternate.
  • Isometric Blocks3x3 grid of soft lilac CSS 3D cubes bobs in a staggered sine wave on a dark lilac-tinted ground. Three shaded faces per cube simulate isometric lighting.
  • Parallax DepthA glowing sun with colored orbiting dots on layered CSS 3D planes that tilt and parallax toward the pointer; auto-orbits until interaction.