# Dots to line loader

> Five dots that slide together into a single rounded line, change color, then pull apart again.

- Category: [Loaders](https://library.aimran.es/components/loaders)
- Built with: HTML + CSS
- Live editor: https://library.aimran.es/blocks/css-dots-line
- Library: AIMRAN Library (https://library.aimran.es), free, no sign-up, by Aimran Oukham

## Where to use it

Dots joining into one line feel like things connecting, so this loader fits sync and pairing moments: linking a smartwatch to its app, connecting a card terminal from a shop’s back office or syncing notes between devices. It is wide and flat, which lets it sit neatly inside a button or under a heading.

Save it for short waits of a few seconds, where the merge and split play once or twice. Choose a second color that feels like a “connected” state, like your brand green or blue, so the line reads as success.

## Code

### HTML

```html
<div class="ul-dl"><i style="--i:0"></i><i style="--i:1"></i><i style="--i:2"></i><i style="--i:3"></i><i style="--i:4"></i></div>
```

### CSS

```css
.ul-dl {
  --c1: #0071e3;
  --c2: #8ec5ff;
  --s: 72px;
  /* tamaño */
  --k: 1;
  /* velocidad */
  --bg: #f5f5f7;
}

.ul-dl {
  display: flex;
  align-items: center;
  height: var(--s);
}

.ul-dl i {
  width: calc(var(--s) / 5);
  height: calc(var(--s) / 5);
  border-radius: 50%;
  background: var(--c1);
  animation: ul-dl calc(1.8s / var(--k)) cubic-bezier(.65,0,.35,1) infinite;
}

@keyframes ul-dl {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 0;
    transform: scaleY(.35);
    background: var(--c2);
  }
}

.ul-dl i:first-child {
  animation-name: ul-dl-a;
}

.ul-dl i:last-child {
  animation-name: ul-dl-b;
}

@keyframes ul-dl-a {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 99px 0 0 99px;
    transform: scaleY(.35);
    background: var(--c2);
  }
}

@keyframes ul-dl-b {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 0 99px 99px 0;
    transform: scaleY(.35);
    background: var(--c2);
  }
}
```

### React

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

const css = `
.ul-dl {
  display: flex;
  align-items: center;
  height: var(--s);
}

.ul-dl i {
  width: calc(var(--s) / 5);
  height: calc(var(--s) / 5);
  border-radius: 50%;
  background: var(--c1);
  animation: ul-dl calc(1.8s / var(--k)) cubic-bezier(.65,0,.35,1) infinite;
}

@keyframes ul-dl {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 0;
    transform: scaleY(.35);
    background: var(--c2);
  }
}

.ul-dl i:first-child {
  animation-name: ul-dl-a;
}

.ul-dl i:last-child {
  animation-name: ul-dl-b;
}

@keyframes ul-dl-a {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 99px 0 0 99px;
    transform: scaleY(.35);
    background: var(--c2);
  }
}

@keyframes ul-dl-b {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 0 99px 99px 0;
    transform: scaleY(.35);
    background: var(--c2);
  }
}
`;

export default function LoaderDotsLine() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "72px",
          "--k": "1",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <div className="ul-dl"><i style={{ "--i": "0" } as CSSProperties}></i><i style={{ "--i": "1" } as CSSProperties}></i><i style={{ "--i": "2" } as CSSProperties}></i><i style={{ "--i": "3" } as CSSProperties}></i><i style={{ "--i": "4" } as CSSProperties}></i></div>
      </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 “Dots to line loader” block (Loaders) from AIMRAN Library to my project.

## What it is
Five dots that slide together into a single rounded line, change color, then pull apart again.

## Chosen settings
- Main color: #0071e3
- Secondary color: #8ec5ff
- Size: 72px (from 24 to 120px)
- Speed: 1x (from 0.5 to 2x)

## 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 = `
.ul-dl {
  display: flex;
  align-items: center;
  height: var(--s);
}

.ul-dl i {
  width: calc(var(--s) / 5);
  height: calc(var(--s) / 5);
  border-radius: 50%;
  background: var(--c1);
  animation: ul-dl calc(1.8s / var(--k)) cubic-bezier(.65,0,.35,1) infinite;
}

@keyframes ul-dl {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 0;
    transform: scaleY(.35);
    background: var(--c2);
  }
}

.ul-dl i:first-child {
  animation-name: ul-dl-a;
}

.ul-dl i:last-child {
  animation-name: ul-dl-b;
}

@keyframes ul-dl-a {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 99px 0 0 99px;
    transform: scaleY(.35);
    background: var(--c2);
  }
}

@keyframes ul-dl-b {
  0%,15%,100% {
    margin: 0 calc(var(--s) / 14);
    border-radius: 50%;
    transform: scale(1);
  }
  45%,70% {
    margin: 0;
    border-radius: 0 99px 99px 0;
    transform: scaleY(.35);
    background: var(--c2);
  }
}
`;

export default function LoaderDotsLine() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "72px",
          "--k": "1",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <div className="ul-dl"><i style={{ "--i": "0" } as CSSProperties}></i><i style={{ "--i": "1" } as CSSProperties}></i><i style={{ "--i": "2" } as CSSProperties}></i><i style={{ "--i": "3" } as CSSProperties}></i><i style={{ "--i": "4" } as CSSProperties}></i></div>
      </div>
    </>
  );
}
```

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