How to hide any element in Webview in Android

final WebView webview = (WebView)findViewById(R.id.browser);

    webview.getSettings().setJavaScriptEnabled(true);

    webview.setWebViewClient(new WebViewClient() {
     @Override
    public void onPageFinished(WebView view, String url)
    {
        // hide element by class name
        webview.loadUrl("javascript:(function() { " +
                "document.getElementsByClassName('your_class_name')[0].style.display='none'; })()");
        // hide element by id
        webview.loadUrl("javascript:(function() { " +
                "document.getElementById('your_id').style.display='none';})()");

    }
    });

webview.loadUrl(url);