What is a CSS 3D Transform?

CSS 3D transforms allow you to move, rotate, and scale HTML elements in three-dimensional space using properties like rotateX(), rotateY(), rotateZ(), translateZ(), and perspective. They create the illusion of depth on a flat screen.

What does perspective do?

The perspective property defines how far the viewer is from the z=0 plane. Smaller values create stronger perspective distortion (objects appear larger when closer), while larger values produce a flatter, more orthographic look. Typical values range from 300px to 1500px.

Why is transform-style: preserve-3d needed?

Without transform-style: preserve-3d, nested elements are flattened into the parent's plane. This property tells the browser to maintain the 3D positioning of child elements, which is essential for building 3D cubes, carousels, or layered scenes.

What's the difference between rotateX, rotateY, and rotateZ?

rotateX() tilts elements forward/backward (like nodding). rotateY() spins elements left/right (like shaking your head). rotateZ() rotates elements clockwise/counterclockwise within the screen plane (like a steering wheel).

How do I create a CSS 3D cube?

Create a container with transform-style: preserve-3d, then place six child elements—one for each face. Position each face using rotateX/Y and translateZ(half-width). Apply a parent perspective to see the 3D effect. This sandbox demonstrates exactly that.

Which browsers support CSS 3D transforms?

All modern browsers support CSS 3D transforms, including Chrome, Firefox, Safari, and Edge. IE10+ had partial support. Mobile Safari and Chrome on iOS/Android also work well, though performance may vary on older devices.

Can I animate CSS 3D transforms?

Yes! Use CSS @keyframes or JavaScript to smoothly interpolate transform values. Combine with transition for hover effects. For complex animations, consider using requestAnimationFrame in JavaScript for butter-smooth 60fps motion.

Why is my 3D transform not working?

Common issues: forgetting transform-style: preserve-3d on the parent, missing perspective, accidentally using overflow: hidden which can clip 3D elements, or setting backface-visibility: hidden when you need to see through elements.