.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 2001;
}

    .topbar .bar {
        height: 100%;
        width: 0%;
        background: #0061f2;
        box-shadow: 0 0 10px #0061f2;
        transition: width .3s ease;
    }

.page-blocker {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(255,255,255,0);
    pointer-events: auto;
    cursor: progress;
}