@media screen and (max-width: 980px) { /* Adjust 980px if needed */
    #rec1010631846 .t-cover__carrier,
    #rec1013742491 .t-cover__carrier {
        background-attachment: fixed !important;
        /* Ensure other necessary properties are maintained if Tilda overrides them */
        background-position: center center !important; /* Or your desired position */
        background-size: cover !important;
        background-repeat: no-repeat !important;

        /* Potentially helpful for some mobile rendering issues with fixed backgrounds */
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
    }
}