# Corner floating label

> The label sits inside the field and slides up to the top corner as soon as you start typing.

- Category: [Inputs](https://library.aimran.es/components/inputs)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/uv-in2-float
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

Floating labels save space in forms where every pixel counts: the email field of a login box, the address step of a checkout on mobile or a short contact form. The label never disappears, it just moves out of the way. A floating label input in HTML and CSS, with a soft focus ring.

Keep labels short, one or two words, because they shrink when they float. For long hints like password rules, add a line of help text under the field instead of stuffing it into the label.

## Code

### HTML

```html
<label class="uv-in2f"><input placeholder=" "><span>Email</span></label>
```

### CSS

```css
.uv-in2f {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 16px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --fg: #1d1d1f;
  /* texto */
  --bg: #f5f5f7;
  /* fondo */
}

.uv-in2f {
  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;
  position: relative;
  display: block;
  width: 16em;
}

.uv-in2f input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  width: 100%;
  box-sizing: border-box;
  padding: 1.35em .95em .6em;
  font-size: var(--s);
  color: var(--fg);
  background: color-mix(in srgb,var(--fg) 5%,transparent);
  border: 0;
  outline: 0;
  border-radius: .8em;
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 10%,transparent);
  transition: box-shadow calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2f span {
  position: absolute;
  left: 1em;
  top: 50%;
  translate: 0 -50%;
  font-size: var(--s);
  color: color-mix(in srgb,var(--fg) 50%,transparent);
  pointer-events: none;
  transition: all calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2f input:focus {
  box-shadow: inset 0 0 0 1.8px var(--c1),0 0 0 4px color-mix(in srgb,var(--c1) 16%,transparent);
}

.uv-in2f input:focus + span,.uv-in2f input:not(:placeholder-shown) + span {
  top: .95em;
  font-size: calc(var(--s) * .7);
  color: var(--c1);
  font-weight: 600;
}
```

### React

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

const css = `
.uv-in2f {
  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;
  position: relative;
  display: block;
  width: 16em;
}

.uv-in2f input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  width: 100%;
  box-sizing: border-box;
  padding: 1.35em .95em .6em;
  font-size: var(--s);
  color: var(--fg);
  background: color-mix(in srgb,var(--fg) 5%,transparent);
  border: 0;
  outline: 0;
  border-radius: .8em;
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 10%,transparent);
  transition: box-shadow calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2f span {
  position: absolute;
  left: 1em;
  top: 50%;
  translate: 0 -50%;
  font-size: var(--s);
  color: color-mix(in srgb,var(--fg) 50%,transparent);
  pointer-events: none;
  transition: all calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2f input:focus {
  box-shadow: inset 0 0 0 1.8px var(--c1),0 0 0 4px color-mix(in srgb,var(--c1) 16%,transparent);
}

.uv-in2f input:focus + span,.uv-in2f input:not(:placeholder-shown) + span {
  top: .95em;
  font-size: calc(var(--s) * .7);
  color: var(--c1);
  font-weight: 600;
}
`;

export default function In2Float() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-in2f"><input placeholder=" " /><span>Email</span></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 “Corner floating label” block (Inputs) from AIMRAN Library to my project.

## What it is
The label sits inside the field and slides up to the top corner as soon as you start typing.

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

## 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-in2f {
  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;
  position: relative;
  display: block;
  width: 16em;
}

.uv-in2f input {
  font-family: -apple-system,BlinkMacSystemFont,"SF Pro Text","Inter",system-ui,sans-serif;
  width: 100%;
  box-sizing: border-box;
  padding: 1.35em .95em .6em;
  font-size: var(--s);
  color: var(--fg);
  background: color-mix(in srgb,var(--fg) 5%,transparent);
  border: 0;
  outline: 0;
  border-radius: .8em;
  box-shadow: inset 0 0 0 1.6px color-mix(in srgb,var(--fg) 10%,transparent);
  transition: box-shadow calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1),background calc(0.3s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2f span {
  position: absolute;
  left: 1em;
  top: 50%;
  translate: 0 -50%;
  font-size: var(--s);
  color: color-mix(in srgb,var(--fg) 50%,transparent);
  pointer-events: none;
  transition: all calc(0.32s / var(--k)) cubic-bezier(.25,.1,.25,1);
}

.uv-in2f input:focus {
  box-shadow: inset 0 0 0 1.8px var(--c1),0 0 0 4px color-mix(in srgb,var(--c1) 16%,transparent);
}

.uv-in2f input:focus + span,.uv-in2f input:not(:placeholder-shown) + span {
  top: .95em;
  font-size: calc(var(--s) * .7);
  color: var(--c1);
  font-weight: 600;
}
`;

export default function In2Float() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "16px",
          "--k": "1",
          "--fg": "#1d1d1f",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <label className="uv-in2f"><input placeholder=" " /><span>Email</span></label>
      </div>
    </>
  );
}
```

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