# Bouncy drawn checkbox

> The tick draws itself in and the box gives a small bounce, so the click feels properly answered.

- Category: [Checkboxes](https://library.aimran.es/components/checkboxes)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-ck2-draw
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

This is the checkbox people have to tick before they can carry on: “I accept the terms” on a sign-up form, the privacy consent under a contact form or the age check of an online wine shop. The line drawing itself and the quick bounce make the click feel confirmed. An animated checkbox in plain HTML and CSS.

Use it once or twice per form, not on a list of twenty options, where all that bouncing gets tiring. Set the accent colour to match your main button so the consent and the submit feel like one step.

## Code

### HTML

```html
<label class="uv-ck2d"><input type="checkbox"><span class="bx"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1"/></svg></span>I accept the terms</label>
```

### CSS

```css
.uv-ck2d {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-ck2d {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
}

.uv-ck2d input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.uv-ck2d .bx {
  display: grid;
  place-items: center;
  width: 1.5em;
  height: 1.5em;
  border-radius: .45em;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 22%,transparent);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),box-shadow calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2d svg {
  width: 1em;
  height: 1em;
  color: #fff;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}

.uv-ck2d svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.35s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2d:hover .bx {
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2d input:checked + .bx {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
  animation: uv-ck2d calc(0.45s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-ck2d input:checked + .bx svg path {
  stroke-dashoffset: 0;
}

@keyframes uv-ck2d {
  0% {
    scale: 1;
  }
  35% {
    scale: .82;
  }
  65% {
    scale: 1.14;
  }
  100% {
    scale: 1;
  }
}
```

### React

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

const css = `
.uv-ck2d {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
}

.uv-ck2d input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.uv-ck2d .bx {
  display: grid;
  place-items: center;
  width: 1.5em;
  height: 1.5em;
  border-radius: .45em;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 22%,transparent);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),box-shadow calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2d svg {
  width: 1em;
  height: 1em;
  color: #fff;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}

.uv-ck2d svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.35s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2d:hover .bx {
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2d input:checked + .bx {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
  animation: uv-ck2d calc(0.45s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-ck2d input:checked + .bx svg path {
  stroke-dashoffset: 0;
}

@keyframes uv-ck2d {
  0% {
    scale: 1;
  }
  35% {
    scale: .82;
  }
  65% {
    scale: 1.14;
  }
  100% {
    scale: 1;
  }
}
`;

export default function Ck2Draw() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-ck2d"><input type="checkbox" /><span className="bx"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1" /></svg></span>I accept the terms</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 “Bouncy drawn checkbox” block (Checkboxes) from AIMRAN Library to my project.

## What it is
The tick draws itself in and the box gives a small bounce, so the click feels properly answered.

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

## 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-ck2d {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  font-size: var(--s);
  color: var(--fg);
  -webkit-tap-highlight-color: transparent;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
}

.uv-ck2d input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.uv-ck2d .bx {
  display: grid;
  place-items: center;
  width: 1.5em;
  height: 1.5em;
  border-radius: .45em;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 22%,transparent);
  transition: background calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1),box-shadow calc(0.25s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2d svg {
  width: 1em;
  height: 1em;
  color: #fff;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}

.uv-ck2d svg path {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.35s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ck2d:hover .bx {
  box-shadow: inset 0 0 0 2px var(--c1);
}

.uv-ck2d input:checked + .bx {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
  animation: uv-ck2d calc(0.45s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-ck2d input:checked + .bx svg path {
  stroke-dashoffset: 0;
}

@keyframes uv-ck2d {
  0% {
    scale: 1;
  }
  35% {
    scale: .82;
  }
  65% {
    scale: 1.14;
  }
  100% {
    scale: 1;
  }
}
`;

export default function Ck2Draw() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-ck2d"><input type="checkbox" /><span className="bx"><svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="3" strokeLinecap="round" strokeLinejoin="round"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1" /></svg></span>I accept the terms</label>
      </div>
    </>
  );
}
```

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