.cartelera-remates {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.cartelera-remates .remate {
    border: 1px solid #ddd;
    padding: 12px;
    background: #fff;
    text-align: center;
}

.cartelera-remates .remate img {
    width: 100%;
    height: auto;
    display: block;
}

.cartelera-remates .remate h3 {
    font-size: 18px;
    margin: 10px 0 5px;
}

.cartelera-remates .remate p {
    font-size: 14px;
    color: #555;
}

/* POP-UP */
.cartelera-remates {
    display: grid;
    grid-template-columns: repeat(auto-fill,minmax(250px,1fr));
    gap: 20px;
}

.cartelera-thumb {
    cursor: pointer;
}

#cartelera-popup {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.85);

    /* clave */
    z-index: 2147483647;

    /* centra */
    align-items: center;
    justify-content: center;
}

#cartelera-popup img {
    max-width: 90%;
    max-height: 90%;
    cursor: pointer;
}

#cartelera-popup .cerrar {
    position: absolute;
    top: 20px;
    right: 30px;
    font-size: 40px;
    color: #fff;
    cursor: pointer;

    /* por si algún tema mete cosas raras */
    z-index: 2147483647;
}