.progress-bar {
    overflow: hidden;
    background-color: #979595;
    height: 4px;
    width: 100%;
    position: fixed;
    top: 0px;
    left: 0px;   
    z-index: 1000;
    overflow: hidden;
}

.progress-fill {
    overflow: hidden;
    background-color: #fc0202;
    height: 4px;
    width: 10vw;
    margin-left: -10vw;
}

.progress-fill.active{
    animation: gradient 2s infinite;
}

@keyframes gradient {
    0% { margin-left: -10vw;}
    100% { margin-left: 100vw; }
}