.gantry_preview_subrow,
.gantry_preview_subrow_left,
.gantry_preview_subrow_right {
    padding: 0 !important;
    border-top: 1px solid lightgray !important;
    text-align: center;
    font-size: 80%;
}

.gantry_preview_subrow_right {
    text-align: right;
}
.gantry_preview_subrow_left {
    text-align: left;
}

.no-drop {
    background-color: darkred;
}

.can-drop {
    background-color: green;
}