linesss.less

.lines {
    padding: 0;
    box-sizing: border-box !important;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    width: 100%;
    z-index: -1;
    overflow: hidden;
}

.lines2 {
    padding: 0;
    box-sizing: border-box !important;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    width: 100%;
    z-index: -1;
    overflow: hidden;
}

.lines .line{
    transform: skew(45deg);
}

.lines2 .line{
    transform: skew(-45deg);
}
.line {
    margin: 0;
    padding: 0;
    box-sizing: border-box !important;
    position: absolute;
    width: 1px;
    height: 100%;
    top: 0;
    left: 50%;
    background: rgba(255, 255, 255, 0.01);
    overflow: hidden;
    transform-origin: center;
    
    &::after {
        margin: 0;
        padding: 0;
        box-sizing: border-box !important;
        content: '';
        display: block;
        position: absolute;
        height: 15vh;
        width: 10px;
        top: -50%;
        left: 0;
        background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.5) 75%, rgba(255, 255, 255, 0.5) 100%);
        animation: run 15s 0s infinite;
        animation-fill-mode: forwards;
        animation-timing-function: cubic-bezier(0.5, 0, 0.5, 1);
    }
}

.loop(@n, @i: 1) when(@i =< @n){
    .line:nth-child(@{i}) {
        margin: 0;
        padding: 0;
        box-sizing: border-box !important;
        margin-left: calc((@i)*150px - 2000px);
        &::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box !important;
            animation-delay: calc(@i*@i*@i*-0.2s);
        }
    }
    .loop(@n, (@i + 1));
}
.loop(20);