@charset "utf-8";
/* CSS Document */

$(function() {
    setSize();
    //リサイズしたら実行
    $(window).resize(function(){
       setSize();
    });
});
 
function setSize() {
    //画像サイズ指定
    var imgW = 2000;
    var imgH = 1332;
    //ウィンドウサイズ取得
    var winW = $(window).width();
    var winH = $(window).height();
    var scaleW = winW / imgW;
    var scaleH = winH / imgH;
    var fixScale = Math.max(scaleW, scaleH);
    var setW = imgW * fixScale;
    var setH = imgH * fixScale;
    var moveX = Math.floor((winW - setW) / 2);
    var moveY = Math.floor((winH - setH) / 2);
 
    $('#bg').css({
        'width': setW,
        'height': setH,
        'left' : moveX,
        'top' : moveY
    });
}