.pace {
    position: fixed;
    width: 100%;
    height: 3px;
    z-index: 9999;
    top: 0;
    left: 0;
}

    .pace:before {
        content: '';
        display: block;
        width: 100%;
        height: 3px;
        background-color: rgba(255,255,255,.4);
        position: absolute;
    }

.pace-inactive {
    display: none;
}

.pace-progress {
    height: 3px;
    z-index: 2;
    position: relative;
    transition: all .1s;
}

.pace-activity {
    display: none;
}