body {
    background: #111;
    overflow: hidden;
        background-image: url("backgroun.jpg");
    background-size: cover;
    background-position: center;

    margin: 0;
    width: 100vw;
    height: 100vh;
}

.paper {
    position: absolute;
    width: 500px;
    cursor: grab;
    user-select: none;
    -webkit-user-drag: none;
}

.paper:active {
    cursor: grabbing;
}