.head {
    position: absolute;

}


body {
    background-color: #70b6d4;
    position:fixed;
    cursor: crosshair;
}

.contents {
    display: flex;
    position: fixed;
    left: 300px;
    bottom: 500px;
}

div.picture {
    width:400px;
    height:400px;
    background-image:url('star.jpg');
    left: 600px;
    bottom: 100px;
    position:fixed;
    opacity: .1;
    

}