body {
    margin: 0;
    overflow: hidden;
    background-color: #ffebf0;
}
#particles-js {
    position: absolute;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    top: 0;
    left: 0;
}
.heart {
    position: absolute;
    top: -30px; /* Se asegura de que empiecen desde arriba */
    color: red;
    font-size: 20px;
    animation: fall linear infinite;
}
@keyframes fall {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(100vh);
        opacity: 0;
    }
}