function addMeta(name, content) {//手动添加mate标签
    let meta = document.createElement('meta');
    meta.content = content;
    meta.name = name;
    document.getElementsByTagName('head')[0].appendChild(meta);
}
addMeta('viewport', 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no');



(function (doc, win) {
    var docEl = doc.documentElement,
        resizeEvt = 'orientationchange' in window ? 'orientationchange' : 'resize',
        recalc = function () {
            var clientWidth = docEl.clientWidth;
            if (!clientWidth) return;
            if (clientWidth > 1920) {
                docEl.style.fontSize = 80 * (clientWidth / 1920) + 'px';
            }
            else if (clientWidth > 1500) {
                docEl.style.fontSize = 80 * (clientWidth / 1920) + 'px';
            }
            else if (clientWidth >= 1440) {
                docEl.style.fontSize = 100 * (clientWidth / 1920) + 'px';
            } else if (clientWidth >= 1024) {
                docEl.style.fontSize = 100 * (clientWidth / 1920) + 'px';
            } else {
                docEl.style.fontSize = 120 * (clientWidth / 750) + 'px';
            }

            var _btimea = setInterval(function () {
                var inbody = doc.querySelector(".in_body");
                try {
                    setTimeout(function () {
                        if (inbody != null) {
                            inbody.style.opacity = 1;
                            clearInterval(_btimea);
                        }
                    }, 200);
                }
                catch (e) { }
            }, 100);
        };

    if (!doc.addEventListener) return;
    win.addEventListener(resizeEvt, recalc, false);
    recalc();
})(document, window);