#progressBar {
    position: fixed;
    z-index: 3;
    width: 100%;
    height: 3px;
    background-color: var(--background-element-2);
    top: 0px;
    left: 0px;
    right: 0px;
}
  
#progressBarFill {
    height: 3px;
    background-color: var(--theme);
    transition: .3s;
    top: 0px;
    left: 0px;
    right: 0px;
}