.pop_in_black_friday {
    display: none;
}

#colorbox .pop_in_black_friday
{
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    justify-content: center;
    text-align: center;
    width: calc(100% - 8rem);
    height: calc(100% - 8rem);
}

.pop_in_black_friday .header
{
    text-decoration: underline;
    font-size: 1.8rem;
}