* {
    margin: 0;
    padding: 0;
}

.body,
body {
    height: 100vh;
    overflow: hidden;
    background: #000;
}

i {
    position: absolute;
    width: 5px;
    height: 200px;
    border-bottom-left-radius: 5px;
    border-bottom-right-radius: 5px;
    animation: rain 3s linear infinite;
}

i:nth-child(3n + 1) {
    background: linear-gradient(transparent, deepskyblue);
}

i:nth-child(3n + 2) {
    background: linear-gradient(transparent, coral);
}

i:nth-child(3n + 3) {
    background: linear-gradient(transparent, deeppink);
}

@-webkit-keyframes rain {
    0% {
        transform: translateY(-200px);
    }
    100% {
        transform: translateY(calc(100vh + 200px));
    }
}

@keyframes rain {
    0% {
        transform: translateY(-200px);
    }
    100% {
        transform: translateY(calc(100vh + 200px));
    }
}