async grabCssPropertyFromPseudo(locator, cssProperty, pseudoElement) {
    const cssValues = await this.grabCssPropertyFromAllPseudo(locator, cssProperty, pseudoElement);

    assertElementExists(cssValues, locator);
    this.helpers.Playwright.debugSection("CSS", cssValues[0]);
    return cssValues[0];
  }
Grab CSS property for given locator with pseudo element
Resumes test execution, so **should be used inside an async function with `await`** operator.
If more than one element is found - value of first element is returned.

```js
const value = await I.grabCssPropertyFromPseudo('h3', 'font-weight', 'after');
```

@param {CodeceptJS.LocatorOrString} locator element located by CSS|XPath|strict locator.
@param {string} cssProperty CSS property name.
@param {string} pseudoElement Pseudo element name.
@returns {Promise<string>} CSS value