# Concentric orbits loader

> Three nested arcs spinning at different speeds, with the middle one going the other way.

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

## Where to use it

Three rings turning at their own pace give a sense of complex work going on, like gears or planets. That makes this loader a good fit for an astronomy blog, the analysis step of a data tool or an AI feature that takes a few seconds to answer. It is pure CSS and scales cleanly to any size.

Because the arcs cross over each other, it shines at medium and large sizes and gets busy when tiny. Give the middle ring the second color; the contrast makes the counter-rotation easy to see.

## Code

### HTML

```html
<div class="ul-orb"><i></i><i></i><i></i></div>
```

### CSS

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

.ul-orb {
  position: relative;
  width: var(--s);
  height: var(--s);
}

.ul-orb i {
  position: absolute;
  border-radius: 50%;
  border: calc(var(--s) / 18) solid transparent;
  border-top-color: var(--c1);
  animation: ul-orb calc(1.2s / var(--k)) cubic-bezier(.65,0,.35,1) infinite;
}

.ul-orb i:nth-child(1) {
  inset: 0;
}

.ul-orb i:nth-child(2) {
  inset: 18%;
  border-top-color: var(--c2);
  animation-duration: calc(1.6s / var(--k));
  animation-direction: reverse;
}

.ul-orb i:nth-child(3) {
  inset: 36%;
  animation-duration: calc(0.9s / var(--k));
}

@keyframes ul-orb {
  to {
    transform: rotate(360deg);
  }
}
```

### React

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

const css = `
.ul-orb {
  position: relative;
  width: var(--s);
  height: var(--s);
}

.ul-orb i {
  position: absolute;
  border-radius: 50%;
  border: calc(var(--s) / 18) solid transparent;
  border-top-color: var(--c1);
  animation: ul-orb calc(1.2s / var(--k)) cubic-bezier(.65,0,.35,1) infinite;
}

.ul-orb i:nth-child(1) {
  inset: 0;
}

.ul-orb i:nth-child(2) {
  inset: 18%;
  border-top-color: var(--c2);
  animation-duration: calc(1.6s / var(--k));
  animation-direction: reverse;
}

.ul-orb i:nth-child(3) {
  inset: 36%;
  animation-duration: calc(0.9s / var(--k));
}

@keyframes ul-orb {
  to {
    transform: rotate(360deg);
  }
}
`;

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

## What it is
Three nested arcs spinning at different speeds, with the middle one going the other way.

## 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-orb {
  position: relative;
  width: var(--s);
  height: var(--s);
}

.ul-orb i {
  position: absolute;
  border-radius: 50%;
  border: calc(var(--s) / 18) solid transparent;
  border-top-color: var(--c1);
  animation: ul-orb calc(1.2s / var(--k)) cubic-bezier(.65,0,.35,1) infinite;
}

.ul-orb i:nth-child(1) {
  inset: 0;
}

.ul-orb i:nth-child(2) {
  inset: 18%;
  border-top-color: var(--c2);
  animation-duration: calc(1.6s / var(--k));
  animation-direction: reverse;
}

.ul-orb i:nth-child(3) {
  inset: 36%;
  animation-duration: calc(0.9s / var(--k));
}

@keyframes ul-orb {
  to {
    transform: rotate(360deg);
  }
}
`;

export default function LoaderOrbits() {
  return (
    <>
      <style>{css}</style>
      <div
        style={{
          "--c1": "#0071e3",
          "--c2": "#8ec5ff",
          "--s": "72px",
          "--k": "1",
          "--bg": "#f5f5f7",
        } as CSSProperties}
      >
        <div className="ul-orb"><i></i><i></i><i></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.
````