.seat-col-design-selected, .seat-col-design:hover, .seat-col-design-space:hover {
    border: 1px solid #262626;
}

.seat-selected {
    border: 1px solid #262626;
}

.seat-design:hover:not(.seat-placeholder), .seat-design-space:hover {
    border: 1px solid #262626;
}