.unbreakable {
    display:inline-block;
    width: 100%;
}

.column-xs-1, .column-sm-1, .column-md-1, .column-lg-1,
.column-xs-2, .column-sm-2, .column-md-2, .column-lg-2,
.column-xs-3, .column-sm-3, .column-md-3, .column-lg-3,
.column-xs-4, .column-sm-4, .column-md-4, .column-lg-4,
.column-xs-5, .column-sm-5, .column-md-5, .column-lg-5 {
    column-count: 1;
}

.column-xs-1 { column-count: 1; }
.column-xs-2 { column-count: 2; }
.column-xs-3 { column-count: 3; }
.column-xs-4 { column-count: 4; }
.column-xs-5 { column-count: 5; }

@media (min-width: 768px) {
    .column-sm-1 { column-count: 1; }
    .column-sm-2 { column-count: 2; }
    .column-sm-3 { column-count: 3; }
    .column-sm-4 { column-count: 4; }
    .column-sm-5 { column-count: 5; }
}

@media (min-width: 992px) {
    .column-md-1 { column-count: 1; }
    .column-md-2 { column-count: 2; }
    .column-md-3 { column-count: 3; }
    .column-md-4 { column-count: 4; }
    .column-md-5 { column-count: 5; }
}

@media (min-width: 1200px) {
    .column-lg-1 { column-count: 1; }
    .column-lg-2 { column-count: 2; }
    .column-lg-3 { column-count: 3; }
    .column-lg-4 { column-count: 4; }
    .column-lg-5 { column-count: 5; }
}

