/* Snowflakes */
.snowflake {
    position: absolute;
    top: -10px;
    background: white;
    border-radius: 50%;
    opacity: 0.8;
    animation: fall 10s infinite linear;
}

/* Different sizes and animation delays for snowflakes */
.snowflake:nth-child(1) {
    width: 8px;
    height: 8px;
    left: 20%;
    animation-duration: 12s;
}
.snowflake:nth-child(2) {
    width: 10px;
    height: 10px;
    left: 40%;
    animation-duration: 8s;
}
.snowflake:nth-child(3) {
    width: 12px;
    height: 12px;
    left: 60%;
    animation-duration: 14s;
}
.snowflake:nth-child(4) {
    width: 6px;
    height: 6px;
    left: 80%;
    animation-duration: 6s;
}

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