#progress-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: transparent;
    z-index: 1000;
    overflow: hidden;
}

#progress-bar {
    width: 0;
    height: 100%;
    background-color: #3498db;
    transition: width 0.5s ease;
}