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# Set style property

## **`style.setProperty(prop, value, options?)`**

Manage the CSS of a Style by setting a specific style property at the given breakpoint and pseudo-state.

### Syntax

```typescript
style.setProperty(
  prop: {{STYLE_PROPERTY}},
  value: string | VariableReference,
  options?: {
    breakpoint?: {{BREAKPOINT_ID}},
    pseudo?: {{PSEUDO_STATE_KEY}},
    variantId?: {{VARIANT_ID}}
  }
): Promise<void>
```

### Parameters

* **`prop`**: *StyleProperty* - The property to set. See the [Style Properties](/designer/reference/style-properties) reference for a list of supported properties.
* **`value`**: *String* | *VariableReference* - The value to set. You can set the value to a string or a [variable reference](/designer/reference/variables-overview).
* **`options`**: *StyleOptions* - An object that filters properties by breakpoint, pseudo-state, and/or variant. (Optional)

  * **`breakpoint`**: *BreakpointId* - Identifies the responsive breakpoint to set the style property for.
    ```typescript
    type BreakpointId = "xxl" | "xl" | "large" | "main" | "medium" | "small" | "tiny"
    ```

  * **`pseudo`**: *PseudoStateKey* - Specifies a CSS pseudo-class to set the style property for.
    ```typescript
    type PseudoStateKey = "noPseudo" | "nth-child(odd)" | "nth-child(even)" |
      "first-child" | "last-child" | "hover" | "active" |
      "visited" | "focus" | "focus-visible" | "focus-within" |
      "placeholder" | "empty" | "before" | "after"
    ```

  * **`variantId`**: *string* - The ID of the variant to target. `'base'` is not a valid value. (Optional)

### Returns

**Promise\<`null`>**

A Promise that resolves to `null`

### Example

```typescript
// Retrieve the style by name
const retrievedStyle = await webflow.getStyleByName(styleName);

// Set a property for a specific breakpoint and pseudo-state
const options: StyleOptions = { breakpoint: "xl", pseudo: "hover" }
await retrievedStyle?.setProperty('background-color', 'blue', options)

// Set a property for a specific variant
await retrievedStyle?.setProperty('color', 'red', { variantId: 'variant-123' })

// Set a property combining variant, breakpoint, and pseudo-state
await retrievedStyle?.setProperty('font-size', '24px', {
  variantId: 'variant-123',
  breakpoint: 'medium',
  pseudo: 'hover',
})
```

[Try this example](https://webflow.com/oauth/authorize?response_type=code\&client_id=19511de1ec410f9228d8dcbc9420e67916dea80d86d18f0c9a533eb475ea0f62)

### Designer Ability

| Designer Ability         | Locale | Branch | Workflow | Sitemode |
| :----------------------- | :----- | :----- | :------- | :------- |
| **canModifyStyleBlocks** | Any    | Any    | Canvas   | Design   |