Код HTML

<script type="text/javascript" src="/js/pace.min.js"></script>

Код CSS

.pace.pace-inactive {
    display: none;
}

.pace {
    pointer-events: none;
    user-select: none;
    background-image: linear-gradient(to top right, #3A539B 0%, #3498DB 100%);
    z-index: 2000;
    position: fixed;
    height: 100%;
    width: 100%;
    margin: auto;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.pace .pace-progress {
    z-index: 2000;
    position: absolute;
    height: 100px;
    width: 140px !important;
    top: 50%;
    left: 50%;
    margin: -50px 0 0 -70px;
}

.pace .pace-progress:before {
    content: attr(data-progress-text);
    text-align: center;
    color: #3A539B;
    background: #C5EFF7;
    border-radius: 50%;
    font-size: 30px;
    font-weight: 500;
    line-height: 1;
    padding: 20% 0 7px;
    width: 65%;
    height: 55%;
    margin: 10px 0 0 30px;
    display: block;
    z-index: 999;
    position: absolute;
}

.pace .pace-progress:after {
    border-radius: 50%;
    border: 5px solid #C5EFF7;
    content: ' ';
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -50px 0 0 -70px;
    height: 100px;
    width: 140px;
    transform: rotate(90deg);
    animation: spin-3 2s linear infinite;
}

.pace .pace-activity {
    font-size: 15px;
    line-height: 1;
    z-index: 2000;
    position: absolute;
    height: 100px;
    width: 140px;
    top: 50%;
    left: 50%;
    margin: -50px 0 0 -70px;
    display: block;
}

.pace .pace-activity:before {
    border-radius: 50%;
    border: 5px solid #C5EFF7;
    content: ' ';
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -50px 0 0 -70px;
    height: 100px;
    width: 140px;
    animation: spin-1 2s linear infinite;
}

.pace .pace-activity:after {
    border-radius: 50%;
    border: 5px solid #C5EFF7;
    content: ' ';
    display: block;
    position: absolute;
    top: 50%;
    left: 50%;
    margin: -50px 0 0 -70px;
    height: 100px;
    width: 140px;
    transform: rotate(45deg);
    animation: spin-2 2s linear infinite;
}

@keyframes spin-1 {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(359deg);
    }
}

@keyframes spin-2 {
    0% {
        transform: rotate(59.8deg);
    }
    100% {
        transform: rotate(418.8deg);
    }
}

@keyframes spin-3 {
    0% {
        transform: rotate(119.6deg);
    }
    100% {
        transform: rotate(478.6deg);
    }
}

Код JavaScript

paceOptions = {
    elements: true
};

setTimeout(function() {
    Pace.ignore(function() {
        load(3100);
    });
}, 4000);

Pace.on('hide', function() {
    console.log('done');
});