# 3D flip checkbox

> The box turns over in 3D when checked and shows a green back face with a white tick.

- Category: [Checkboxes](https://library.aimran.es/components/checkboxes)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-chk-3d
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

A flipping checkbox makes a simple yes feel like a small event. Use it for “Activate” next to a feature in account settings, for confirming attendance in an event RSVP or for enabling add-ons in a subscription builder. The box turns on its vertical axis like a playing card and lands on its green side.

The back face is always green, the color most people read as “OK”, so it does not follow your main color. If your brand clashes with that green, choose another checkbox. The flip lasts over half a second, which suits a few important options better than a long list.

## Code

### HTML

```html
<label class="uv-c3"><input type="checkbox"><span><b></b><b><svg viewBox="0 0 24 24"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1"/></svg></b></span>Turn on</label>
```

### CSS

```css
.uv-c3 {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-c3 {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .8em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
  perspective: 10em;
}

.uv-c3 input {
  display: none;
}

.uv-c3 span {
  position: relative;
  width: 1.8em;
  height: 1.8em;
  transform-style: preserve-3d;
  transition: transform calc(0.6s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-c3 b {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: .45em;
  backface-visibility: hidden;
}

.uv-c3 b:first-child {
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 25%,transparent);
  background: var(--bg);
}

.uv-c3 b:last-child {
  background: #30d158;
  transform: rotateY(180deg);
  box-shadow: 0 6px 16px -6px #30d158;
}

.uv-c3 svg {
  width: 65%;
  fill: none;
  stroke: #fff;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.uv-c3 input:checked+span {
  transform: rotateY(180deg);
}
```

### React

```tsx
import type { CSSProperties } from "react";

const css = `
.uv-c3 {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .8em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
  perspective: 10em;
}

.uv-c3 input {
  display: none;
}

.uv-c3 span {
  position: relative;
  width: 1.8em;
  height: 1.8em;
  transform-style: preserve-3d;
  transition: transform calc(0.6s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-c3 b {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: .45em;
  backface-visibility: hidden;
}

.uv-c3 b:first-child {
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 25%,transparent);
  background: var(--bg);
}

.uv-c3 b:last-child {
  background: #30d158;
  transform: rotateY(180deg);
  box-shadow: 0 6px 16px -6px #30d158;
}

.uv-c3 svg {
  width: 65%;
  fill: none;
  stroke: #fff;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.uv-c3 input:checked+span {
  transform: rotateY(180deg);
}
`;

export default function Chk3d() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-c3"><input type="checkbox" /><span><b></b><b><svg viewBox="0 0 24 24"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1" /></svg></b></span>Turn on</label>
      </div>
    </>
  );
}
```

## Prompt for AI assistants

Paste this into ChatGPT, Claude, Cursor, v0 or Lovable to adapt the block to your stack (Tailwind, Vue, Svelte…):

````text
I want to add the “3D flip checkbox” block (Checkboxes) from AIMRAN Library to my project.

## What it is
The box turns over in 3D when checked and shows a green back face with a white tick.

## Chosen settings
- Main color: #0071e3
- Secondary color: #8ec5ff
- Size: 16px (from 12 to 24px)
- Speed: 1x (from 0.5 to 2x)
- Text: "Turn on"

## What I need
1. Add it to my project with the same look and animation as the reference code: same sizes, colours, radii, shadows, timings and easing.
2. It is built with plain HTML and CSS (the reference wraps it in a React component with its CSS). If my project uses something else (Vue, Svelte, Astro, plain HTML…), translate it without losing any behaviour. If I use Tailwind, turn the styles into classes; if not, keep the CSS in its own file.
3. Expose the settings above as props (or CSS variables) with those values as defaults.
4. Make it work well on phones: nothing that depends only on hover, touch targets of at least 44 px and no overflow on 320 px screens.
5. Make it look right in light and dark mode.
6. Keep it accessible: semantic HTML, roles and aria-* where needed, visible focus and keyboard support.
7. Respect prefers-reduced-motion: with reduced motion, no big animations but the same end result.

## Reference code
```tsx
import type { CSSProperties } from "react";

const css = `
.uv-c3 {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .8em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
  perspective: 10em;
}

.uv-c3 input {
  display: none;
}

.uv-c3 span {
  position: relative;
  width: 1.8em;
  height: 1.8em;
  transform-style: preserve-3d;
  transition: transform calc(0.6s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-c3 b {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: .45em;
  backface-visibility: hidden;
}

.uv-c3 b:first-child {
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 25%,transparent);
  background: var(--bg);
}

.uv-c3 b:last-child {
  background: #30d158;
  transform: rotateY(180deg);
  box-shadow: 0 6px 16px -6px #30d158;
}

.uv-c3 svg {
  width: 65%;
  fill: none;
  stroke: #fff;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.uv-c3 input:checked+span {
  transform: rotateY(180deg);
}
`;

export default function Chk3d() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-c3"><input type="checkbox" /><span><b></b><b><svg viewBox="0 0 24 24"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1" /></svg></b></span>Turn on</label>
      </div>
    </>
  );
}
```

Give me the complete final code, ready to paste, and tell me in one line where to put it in my project.
````