.alert-navidad {
    position: relative;
    border: 3px solid #d4af37 !important;
    /* borde dorado */
    border-radius: 12px;
    background: linear-gradient(180deg, #2d9ecd, #ffffff);
    overflow: hidden;
}

.alert-navidad h4 {
    color: #b10f32;
}

.alert-navidad p {
    color: #3a3a3a;
}

/* Efecto nieve */
.alert-navidad::after {
    content: "";
    position: absolute;
    top: -100px;
    left: 0;
    width: 100%;
    height: 200%;
    pointer-events: none;
    background-image: radial-gradient(#ffffff 1px, transparent 1px);
    background-size: 22px 22px;
    animation: nieveCaer 14s linear infinite;
    opacity: 0.35;
}

@keyframes nieveCaer {
    from {
        background-position: 0 -100px;
    }

    to {
        background-position: 0 600px;
    }
}

.icono-navidad {
    color: #229656;
}