body {
    background-image: url("white-wood-background.png"); 
    background-position-x: center;
    background-position-y: center;
    /*background-size:contain;*/
    transition:all 0.1s ease;
    -webkit-transition: all .1s ease;
    -moz-transition: all .1s ease;
    -o-transition: all .1s ease;  

    -ms-overflow-style: none; /* for Internet Explorer, Edge */
    scrollbar-width: none; /* for Firefox */
    overflow-y: scroll;   
}