body {
    margin: 0;
    height: 100vh;
    background-color: #c3cfff;
    justify-content: center;
    align-items: center;
    display: flex;
    overflow: hidden;
}

.snow {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.snowflake {
    position: absolute;
    top: -10px;
    font-size: 16px;
    color: #fff;
    animation: fall 10s linear infinite;
}

@keyframes fall {
    0% {
        transform: translateY(-100px)
    }
    100% {
        transform: translateY(100vh)
    }
}