.stefa_flexbox--nuevas-altas{
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

@media (max-width: 375px) {
    .custom-image__boletin {
        margin-bottom: -3px !important;
    }
}

@media (min-width: 376px) {
    .custom-image__boletin {
        margin-bottom: -1px;
    }
}

@media (min-width: 768px) and (max-width: 800px) {
    .custom-image__boletin {
        margin-bottom: -0.5px;
    }
}

@media (min-width: 801px) {
    #imagen-1__custom {
        margin-top: -0.5px;
    }
}

img{
    max-width: 100%;
}