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◆ AI Learning · Hard rule

How does a CSS flip card animation work?

A flip card animation uses CSS properties to create a 3D rotation effect. The front and back of the card are positioned absolutely. One side is pre-rotated to show correctly after the flip.

By Pawan Nayar · from the LLOS AI Learning record

The rule

A flip card animation uses CSS properties to create a 3D rotation effect.

The front and back of the card are positioned absolutely. One side is pre-rotated to show correctly after the flip.

The main container, `.flip-card`, has a fixed height and `perspective`. This creates a 3D viewing effect. The inner container, `.flip-card-inner`, handles the rotation. It uses `transform-style:preserve-3d` for 3D space. A `transition` property makes the flip smooth. When the card flips, a JavaScript class, `.flipped`, is added to `.flip-card`. This class rotates `.flip-card-inner` by 180 degrees on the Y-axis. The front and back of the card are positioned absolutely. They hide their back face with `backface-visibility:hidden`. The back of the card is pre-rotated by 180 degrees. This ensures it faces the user after the inner container flips.

A developer wants to create an interactive flashcard. The developer uses CSS to make the card flip when clicked. The front shows a question, and the back shows the answer. The CSS rules ensure a smooth 3D rotation effect.

Words you'll need

Resolved from this lesson's own record — real definitions, not invented for this page.

User Experience

How people feel and succeed when interacting with AI systems

Human-Computer Interaction

How people and computers communicate and work together

Questions people ask

More from the same record, pulled by shared topic — not written new for this page.

How can a developer position a child element relative to its parent using CSS?

A developer can set the parent element's CSS `position` to `relative`. This allows child elements with `position: absolute` to move within the parent.

Why did a CSS change hide parts of a user interface and delete content?

A developer tried to fix a display issue. The developer wrapped two elements, `#status` and `#milestoneFooter`, in a new container called `.status-slot`.

How should a developer structure HTML for a complex, interactive web experience?

A developer uses a main container for the entire experience. Inside, specific sections handle different parts.

How should a developer structure the HTML and CSS for a timeline component?

The main container for a timeline is the `.timeline` class. This class holds all parts of the timeline.

What to remember

A flip card animation uses CSS properties to create a 3D rotation effect. The front and back of the card are positioned absolutely. One side is pre-rotated to show correctly after the flip.