# Heart like button

> An outlined heart that fills with red and bounces when you tap it, the classic “like” gesture.

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

## Where to use it

This heart checkbox is the universal “like” or “save for later”. Put it on the product cards of an online shop as a wishlist button, next to recipes on a food blog or on the photos of a travel gallery. The outline fills in red with a quick bounce, the same gesture people know from every social app.

It only remembers the state on the page itself; to keep favorites between visits you need to save them on your side. The label is optional, so you can drop the text and use the heart alone in the corner of a card.

## Code

### HTML

```html
<label class="uv-ch"><input type="checkbox"><svg viewBox="0 0 24 24"><path d="M12 21s-7.5-4.6-9.6-9.2C.9 8.4 3 4.5 6.8 4.5c2.1 0 3.6 1.2 5.2 3 1.6-1.8 3.1-3 5.2-3 3.8 0 5.9 3.9 4.4 7.3C19.5 16.4 12 21 12 21z"/></svg>Like</label>
```

### CSS

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

.uv-ch {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
}

.uv-ch input {
  display: none;
}

.uv-ch svg {
  width: 1.8em;
  fill: transparent;
  stroke: color-mix(in srgb,var(--fg) 40%,transparent);
  stroke-width: 1.8;
  transition: fill calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),stroke calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ch input:checked+svg {
  fill: #ff375f;
  stroke: #ff375f;
  animation: uv-heart calc(0.5s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

@keyframes uv-heart {
  0% {
    transform: scale(.6);
  }
  50% {
    transform: scale(1.3);
  }
  100% {
    transform: scale(1);
  }
}
```

### React

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

const css = `
.uv-ch {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
}

.uv-ch input {
  display: none;
}

.uv-ch svg {
  width: 1.8em;
  fill: transparent;
  stroke: color-mix(in srgb,var(--fg) 40%,transparent);
  stroke-width: 1.8;
  transition: fill calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),stroke calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ch input:checked+svg {
  fill: #ff375f;
  stroke: #ff375f;
  animation: uv-heart calc(0.5s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

@keyframes uv-heart {
  0% {
    transform: scale(.6);
  }
  50% {
    transform: scale(1.3);
  }
  100% {
    transform: scale(1);
  }
}
`;

export default function ChkHeart() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-ch"><input type="checkbox" /><svg viewBox="0 0 24 24"><path d="M12 21s-7.5-4.6-9.6-9.2C.9 8.4 3 4.5 6.8 4.5c2.1 0 3.6 1.2 5.2 3 1.6-1.8 3.1-3 5.2-3 3.8 0 5.9 3.9 4.4 7.3C19.5 16.4 12 21 12 21z" /></svg>Like</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 “Heart like button” block (Checkboxes) from AIMRAN Library to my project.

## What it is
An outlined heart that fills with red and bounces when you tap it, the classic “like” gesture.

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

## 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-ch {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-size: var(--s);
  color: var(--fg);
  cursor: pointer;
}

.uv-ch input {
  display: none;
}

.uv-ch svg {
  width: 1.8em;
  fill: transparent;
  stroke: color-mix(in srgb,var(--fg) 40%,transparent);
  stroke-width: 1.8;
  transition: fill calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),stroke calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-ch input:checked+svg {
  fill: #ff375f;
  stroke: #ff375f;
  animation: uv-heart calc(0.5s / var(--k)) cubic-bezier(.34,1.56,.64,1);
}

@keyframes uv-heart {
  0% {
    transform: scale(.6);
  }
  50% {
    transform: scale(1.3);
  }
  100% {
    transform: scale(1);
  }
}
`;

export default function ChkHeart() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-ch"><input type="checkbox" /><svg viewBox="0 0 24 24"><path d="M12 21s-7.5-4.6-9.6-9.2C.9 8.4 3 4.5 6.8 4.5c2.1 0 3.6 1.2 5.2 3 1.6-1.8 3.1-3 5.2-3 3.8 0 5.9 3.9 4.4 7.3C19.5 16.4 12 21 12 21z" /></svg>Like</label>
      </div>
    </>
  );
}
```

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