.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 5px;
    width: 0%;
    background-color: #6e6e6e;
    z-index: 20;
    transition: all 0.1s ease-in-out;
    box-shadow: 0 0 10px rgba(94, 94, 94, 0.5);
}