rem

[flashlizi]

;(function(){ var win = window, docElem = document.documentElement, timeoutId;

setRem(); docElem.setAttribute('data-dpr', win.devicePixelRatio); win.addEventListener('resize', delaySetRem, false); win.addEventListener('pageshow', function(e){ e.persisted && delaySetRem(); }, false);

function delaySetRem(){ clearTimeout(timeoutId); timeoutId = setTimeout(setRem, 300); }

function setRem(){ win.rem = docElem.getBoundingClientRect().width / 10; docElem.style.fontSize = win.rem + 'px'; } })();