var body = document.body; body.className += " u-body"; body.style.cssText += " "; var dataBg = ''; if (dataBg) { body.setAttribute('data-bg', dataBg); } html{ margin: 0; height: 100%; overflow: hidden; } iframe{ position: absolute; left:0; right:0; bottom:0; top:0; border:0; } 114
