#orientationswipe {
    margin: 0px auto auto;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url(swipe.png);
    background-repeat: no-repeat;
    background-position: center;
    background-color: #000;
    z-index: 999;
    display: none;
    opacity: .8;
}

#closeswipe {
    background-image: url(close.png);
    background-repeat: no-repeat;
    background-position: center;
    width: 48px;
    height: 48px;
    border: 0 none;
    margin-top: 5%;
    margin-left: 50%;
}