# Self-drawing checkbox

> When checked, the box pops with a small bounce and the tick draws itself stroke by stroke.

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

## Where to use it

This animated checkbox fits the moments where someone agrees to something: “I accept the terms” at sign-up, the newsletter consent under a contact form or the privacy box of a booking. The box fills with your main color, bounces once and the tick is drawn like a quick pen stroke.

There is a real checkbox underneath, so forms receive the value as usual. Keep the label short; the whole line toggles it. The effect is subtle enough to repeat several times on a settings page without getting tiring, which is not true of every checkbox animation.

## Code

### HTML

```html
<label class="uv-cd"><input type="checkbox" checked><span><svg viewBox="0 0 24 24"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1"/></svg></span>I agree</label>
```

### CSS

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

.uv-cd {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
}

.uv-cd input {
  display: none;
}

.uv-cd span {
  display: grid;
  place-items: center;
  width: 1.6em;
  height: 1.6em;
  border-radius: .45em;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 25%,transparent);
  transition: all calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-cd svg {
  width: 70%;
  fill: none;
  stroke: #fff;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.35s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.1s / var(--k));
}

.uv-cd input:checked+span {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
  animation: uv-pop calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-cd input:checked+span svg {
  stroke-dashoffset: 0;
}

@keyframes uv-pop {
  50% {
    transform: scale(1.2);
  }
}
```

### React

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

const css = `
.uv-cd {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
}

.uv-cd input {
  display: none;
}

.uv-cd span {
  display: grid;
  place-items: center;
  width: 1.6em;
  height: 1.6em;
  border-radius: .45em;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 25%,transparent);
  transition: all calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-cd svg {
  width: 70%;
  fill: none;
  stroke: #fff;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.35s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.1s / var(--k));
}

.uv-cd input:checked+span {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
  animation: uv-pop calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-cd input:checked+span svg {
  stroke-dashoffset: 0;
}

@keyframes uv-pop {
  50% {
    transform: scale(1.2);
  }
}
`;

export default function ChkDraw() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-cd"><input type="checkbox" checked={true} /><span><svg viewBox="0 0 24 24"><path d="M5 12.5l4.5 4.5L19 7.5" pathLength="1" /></svg></span>I agree</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 “Self-drawing checkbox” block (Checkboxes) from AIMRAN Library to my project.

## What it is
When checked, the box pops with a small bounce and the tick draws itself stroke by stroke.

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

## 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-cd {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .7em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
}

.uv-cd input {
  display: none;
}

.uv-cd span {
  display: grid;
  place-items: center;
  width: 1.6em;
  height: 1.6em;
  border-radius: .45em;
  box-shadow: inset 0 0 0 2px color-mix(in srgb,var(--fg) 25%,transparent);
  transition: all calc(0.35s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-cd svg {
  width: 70%;
  fill: none;
  stroke: #fff;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset calc(0.35s / var(--k)) cubic-bezier(.25,.1,.25,1) calc(0.1s / var(--k));
}

.uv-cd input:checked+span {
  background: var(--c1);
  box-shadow: inset 0 0 0 2px var(--c1);
  animation: uv-pop calc(0.4s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

.uv-cd input:checked+span svg {
  stroke-dashoffset: 0;
}

@keyframes uv-pop {
  50% {
    transform: scale(1.2);
  }
}
`;

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

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