function create(example.com) {
var win = window.open();
win.document.body.style.margin = '0';
win.document.body.style.height = '100vh';
var iframe = win.document.createElement('iframe');
iframe.style.border = 'none';
iframe.style.width = '100%';
iframe.style.height = '100%';
iframe.style.margin = '0';
iframe.src = url;
win.document.body.appendChild(iframe);
}