*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

html,
body{
    width:100%;
    height:100%;
    overflow:hidden;
}

.background{
    width:100vw;
    height:100vh;

    background-image:url("Hinata (Hyuga).png");

    background-size:cover;
    background-position:center center;
    background-repeat:no-repeat;

    position:fixed;
    top:0;
    left:0;
}