body {
    background: #000;
}

.lightrope {
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    position: absolute;
    z-index: 1;
    margin: -15px 0 0 0;
    padding: 0;
    pointer-events: none;
    width: 100%;
}

    .lightrope li {
        position: relative;
        animation-fill-mode: both;
        animation-iteration-count: infinite;
        list-style: none;
        margin: 0;
        padding: 0;
        display: block;
        width: 12px;
        height: 28px;
        border-radius: 50%;
        margin: 20px;
        display: inline-block;
        background: rgba(0, 247, 165, 1);
        box-shadow: 0px 4.66667px 24px 3px rgba(0, 247, 165, 1);
        animation-name: flash-1;
        animation-duration: 2s;
    }

        .lightrope li:nth-child(2n+1) {
            background: rgba(0, 255, 255, 1);
            box-shadow: 0px 4.66667px 24px 3px rgba(0, 255, 255, 0.5);
            animation-name: flash-2;
            animation-duration: 0.4s;
        }

        .lightrope li:nth-child(4n+2) {
            background: rgba(247, 0, 148, 1);
            box-shadow: 0px 4.66667px 24px 3px rgba(247, 0, 148, 1);
            animation-name: flash-3;
            animation-duration: 1.1s;
        }

        .lightrope li:nth-child(odd) {
            animation-duration: 1.8s;
        }

        .lightrope li:nth-child(3n+1) {
            animation-duration: 1.4s;
        }

        .lightrope li:before {
            content: "";
            position: absolute;
            background: #222;
            width: 10px;
            height: 9.33333px;
            border-radius: 3px;
            top: -4.66667px;
            left: 1px;
        }

        .lightrope li:after {
            content: "";
            top: -14px;
            left: 9px;
            position: absolute;
            width: 52px;
            height: 18.66667px;
            border-bottom: solid #222 2px;
            border-radius: 50%;
        }

        .lightrope li:last-child:after {
            content: none;
        }

        .lightrope li:first-child {
            margin-left: -40px;
        }

@keyframes flash-1 {
    0%, 100% {
        background: rgba(0, 247, 165, 1);
        box-shadow: 0px 4.66667px 24px 3px rgba(0, 247, 165, 1);
    }

    50% {
        background: rgba(0, 247, 165, 0.4);
        box-shadow: 0px 4.66667px 24px 3px rgba(0, 247, 165, 0.2);
    }
}

@keyframes flash-2 {
    0%, 100% {
        background: rgba(0, 255, 255, 1);
        box-shadow: 0px 4.66667px 24px 3px rgba(0, 255, 255, 1);
    }

    50% {
        background: rgba(0, 255, 255, 0.4);
        box-shadow: 0px 4.66667px 24px 3px rgba(0, 255, 255, 0.2);
    }
}

@keyframes flash-3 {
    0%, 100% {
        background: rgba(247, 0, 148, 1);
        box-shadow: 0px 4.66667px 24px 3px rgba(247, 0, 148, 1);
    }

    50% {
        background: rgba(247, 0, 148, 0.4);
        box-shadow: 0px 4.66667px 24px 3px rgba(247, 0, 148, 0.2);
    }
}