```css title=async-one.css
body {
  background: blue;
}

body {
  background: yellow;
}


```

```css title=async-two.css
body {
  background: yellow;
}

body {
  background: blue;
}


```

```css title=main-one.css
body {
  background: red;
}

body {
  background: green;
}


```

```css title=main-two.css
body {
  background: green;
}

body {
  background: red;
}


```