/* ===== Camera last-image grid: equal-height columns to prevent Bootstrap-3 float-snag gaps ===== */
.camera-grid {
    display: flex;
    flex-wrap: wrap;
}
.camera-grid > [class*="col-"] {
    display: flex;
    flex-direction: column;
}
.camera-grid > [class*="col-"] > .panel {
    flex: 1 1 auto;   /* panel fills the equalized column height so its border reaches the bottom */
    width: 100%;
}