src/vs/workbench/contrib/webview/browser/webviewElement.ts/WebviewElement/style
class WebviewElement:	protected style(): void {
		let { styles, activeTheme, themeLabel, themeId } = this.webviewThemeDataProvider.getWebviewThemeData();
		if (this._options.transformCssVariables) {
			styles = this._options.transformCssVariables(styles);
		}

		const reduceMotion = this._accessibilityService.isMotionReduced();
		const screenReader = this._accessibilityService.isScreenReaderOptimized();

		this._send('styles', { styles, activeTheme, themeId, themeLabel, reduceMotion, screenReader });
	}