export const copyCss = (shadow) => {
	let css = '';
	for (let i = 0; i < document.styleSheets.length; i++) {
		const styleSheet = document.styleSheets[i];
		for (let j = 0; j < styleSheet.rules.length; j++) {
			css += styleSheet.rules[j].cssText;	
		}
	}
	const sheet = new CSSStyleSheet();
	sheet.replaceSync(css);
	shadow.adoptedStyleSheets = [sheet];
};