Use the CSS property `font-size` to scale the loader proportionally.

```html
<div class="flex gap-12 items-center">
  <div style="font-size: 4rem">
    <sd-loader color="primary"></sd-loader>
  </div>
  <div style="font-size: 2rem">
    <sd-loader color="primary"></sd-loader>
  </div>
  <div style="font-size: inherit">
    <sd-loader color="primary"></sd-loader>
  </div>
</div>
```