#pbr-progress-bar {
    position: fixed;
    left: 0;
    width: 0%;
    height: 5px;
    background: #4a8df8;
    z-index: 9999;
    transition: width 0.1s ease;
}

#pbr-progress-bar.top {
    top: 0;
}

#pbr-progress-bar.bottom {
    bottom: 0;
}