*
{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body
{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #1b1b1b;
}
.container
{
    position: relative;
    width: 100%;
    height: 600px;
    display: flex;
    justify-content: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.container .cloud
{
    position: relative;
    width: 320px;
    height: 100px;
    background: #fff;
    border-radius: 100px;
    filter: drop-shadow(8px 8px 0 #0005);
    animation: animateCloud 2s steps(1) infinite;
}
@keyframes animateCloud
{
    0%
    {
        filter:  drop-shadow(8px 8px 0 #0001) drop-shadow(0 0 0 #fff) brightness(1);
    }
    95%
    {
        filter:  drop-shadow(8px 8px 0 #0001) drop-shadow(0 0 50px #fff) brightness(10);
    }
}
.container .cloud::before
{
    content: '';
    position: absolute;
    top: -50px;
    left: 40px;
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background: #484f59;
    box-shadow: 90px -10px 0 30px #484f59;
}
.container .cloud::after{
    content: '';
    position: absolute;
    inset: 0;
    background: #484f59;
    border-radius: 100px;
    z-index: 1000;
}
.container .cloud .drop
{
    position: absolute;
    top: 40px;
    background: #05a2eb;
    width: 2px;
    height: 10px;
    transform-origin: bottom;
    animation: animate 2s linear infinite;
}
@keyframes animate{
    0%
    {
        transform: translateY(0) scale(1);
    }
    70%
    {
        transform: translateY(360px) scaleY(1);
    }
    80%
    {
        transform: translateY(360px) scaleY(0.2);
    }
    100%
    {
        transform: translateY(360px) scaleY(0) scaleX(15);
    }
}