# `effect`

```strand
element effect(EffectKind -> style): node
```

A built-in effect: `effect sparks { … }`.

It takes no children.

Also every prop and event of [`node`](/reference/elements/node.html.md).

| Prop | Type | |
| --- | --- | --- |
| `speed` | `float` | How fast it runs; 1 is normal. |