#page #activityRow_2 {
    margin-bottom: 70px;
}
#page .activityRow:last-child {
    margin-bottom: 0;
}
@media only screen and (max-width: 990px) {
    #page #activityRow_2,
    #page .activityRow:last-child{
        margin-bottom: 64px;
    }
}