.ngg_progressbar {
    width: 100%;
    background: #292929;
    border: 1px solid #111;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 0 5px #333;
    height: 25px;
}

.ngg_progressbar div {
    width: 0%;
    text-align: right;
    color: white;
    background-image: url('animation.gif');
    border: solid 1px darkolivegreen;
    overflow: hidden;
    border-radius: 5px;
    height: 100%;
    font-size: 12px;
    padding-top: 3px;
    font-family: Helvetica, Arial
}

.ngg_progressbar.infinite div {
    width: 100%;
    text-align: center;
}