.brick.small {
    background-color: #ccc;
    margin-top:0px;
    margin-left:0px;
}
@media (min-width:1440px) {
    .brick.small {
        width: 160px;
        height: 160px;
    }
    .collage-bg {
        max-width: 530px;
    }
}
@media (min-width:1050px) and (max-width:1439px) {
    .brick.small {
        width: 130px;
        height: 130px;
    }
    .collage-bg {
        max-width: 430px;
    }
}
@media (min-width:426px) and (max-width:1049px) {
    .brick.small {
        width: 120px;
        height: 120px;
    }
    .collage-bg {
        max-width: 410px;
    }
}
@media (min-width:340px) and (max-width:425px) {
    .brick.small {
        width: 90px;
        height: 90px;
    }
    .collage-bg {
        max-width: 330px;
    }
}
@media (max-width:339px) {
    .brick.small {
        width: 70px;
        height: 70px;
    }
    .collage-bg {
        max-width: 280px;
    }
}