(function(doc,win){
var docEl = doc.documentElement,resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
recalc = function(){
var clientWidth = docEl.clientWidth;
if(!clientWidth) return;
if(clientWidth>=750){
docEl.style.fontSize = '100px';
}
else{
docEl.style.fontSize = 100 * (clientWidth / 750) + 'px';
}
// docEl.style.fontSize = '100px';
};
if (!doc.addEventListener) return;
win.addEventListener(resizeEvt, recalc, false);
doc.addEventListener('DOMContentLoaded', recalc, false);
})(document,window);
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