#progress-container {
    margin-top: 10px;
    width: 100%;
    background: #ddd;
    border-radius: 4px;
    overflow: hidden;
}
#progress-bar {
    height: 20px;
    background: #4caf50;
    color: #fff;
    text-align: center;
    line-height: 20px;
    transition: width 0.3s;
}