@media only screen and (min-width: 750px) {
    #scaledown{
        position: absolute;
        left: 25%;
        overflow-y: visible;
        transform: scale(0.50);
        transform-origin: left top;
        height: calc(100% / 0.50);
        /*IE(Internet Explorer)・Microsoft Edgeへの対応*/
        -ms-overflow-style: none;
        /*Firefoxへの対応*/
        scrollbar-width: none;
    }

    /*Google Chrome、Safariへの対応*/
    #scaledown::-webkit-scrollbar{
        display: none;
    }
}