function rendermeta(){
    let width = document.documentelement.clientwidth;
    let scale = (width / 1300).tofixed(6);
    let height = document.body.scrollheight;
    if (width > 1300 || width < 768) {
        scale = 1;
    }
    if (scale < 1) {
        let marginleft = -390 * scale / 2;
        let margintop = -height * (1 - scale) / 2;
        //document.body.setattribute('style', 'transform:scale(' + scale + ');margin-left:' + (-marginleft) + 'px;margin-right:' + (-marginleft) + 'px;transform-origin:top;');
        // document.body.setattribute('style', 'transform:scale(' + scale + ');margin:' + (-marginleft) + 'px;');
        if (navigator.useragent.indexof('firefox') > -1) {  //只有火狐有
            // document.body.setattribute('style', 'transform:scale(' + scale + ');margin:' + margintop + 'px ' + marginleft + 'px;');
        } else {
            document.body.setattribute('style', 'zoom:' + scale + ';');
        }
    }
    else {
        //document.body.setattribute('style','margin-left:0;margin-right:0;margin-top:0;');
        if (navigator.useragent.indexof('firefox') > -1) {  //只有火狐有
            // document.body.setattribute('style', 'margin-left:0;margin-right:0;margin-top:0;');
        } else {
            document.body.setattribute('style', 'zoom:1;');
        }

    }
}
$(window).resize(function(){
    rendermeta()
})
$(function(){
    rendermeta()
})