#top-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 999999;
    overflow: hidden;
    pointer-events: none;
}

#top-loader::before {
    content: "";
    position: absolute;
    left: -40%;
    width: 40%;
    height: 100%;
    background: #ffff;
    border-radius: 0 2px 2px 0;
    animation: topLoader 2.5s ease-in-out infinite;
}

#top-loader.hide {
    opacity: 0;
    transition: opacity .3s ease;
}

@keyframes topLoader {
    0% {
        left: -40%;
    }

    100% {
        left: 100%;
    }
}